To see the other types of publications on this topic, follow the link: Mathematics laboratory.

Dissertations / Theses on the topic 'Mathematics laboratory'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Mathematics laboratory.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Lewis, Matthew. "Laboratory Experiences in Mathematical Biology for Post-Secondary Mathematics Students." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5219.

Full text
Abstract:
In addition to the memorization, algorithmic skills and vocabulary which is the default focus in many mathematics classrooms, professional mathematicians are expected to creatively apply known techniques, construct new mathematical approaches and communicate with and about mathematics. We propose that students can learn these professional, higher level skills through Laboratory Experiences in Mathematical Biology (LEMBs) which put students in the role of mathematics researcher creating mathematics to describe and understand biological data. LEMBs are constructed so they require no specialized equipment and can easily be run in the context of a college math class. Students collect data and develop mathematical models to explain the data. In this work examine how LEMBs are designed with the student as the primary focus. We explain how well-designed LEMBs lead students to interact with mathematics at higher levels of cognition while building mathematical skills sought after in both academia and industry. Additionally, we describe the online repository created to assist in the teaching and further development of LEMBs. Since student-centered teaching is foreign to many post-secondary instructors, we provide research-based, pedagogical strategies to ensure student success while maintaining high levels of cognition.
APA, Harvard, Vancouver, ISO, and other styles
2

Adenegan, Kehinde Emmanuel. "Setting mathematics laboratory in schools." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-82299.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Camilla, Lindmark. "Teachers Experiences of Laboratory Mathematics - is there a Need for a Mathematics Workshop in Compulsory school level 7-9?" Thesis, Malmö högskola, Fakulteten för lärande och samhälle (LS), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-32294.

Full text
Abstract:
Lindmark, Camilla (2016). Lärares erfarenheter av laborativ matematik – finns det behov av en matematikverkstad på högstadiet? Speciallärarprogrammet. Skolutveckling och ledarskap. Lärande och samhälle. Malmö högskola, 90 hp.Förväntat kunskapsbidragForskning, se t.ex. Rystedt och Trygg (2010), Malmer (2002), Bishop (1991), belyser alla vikten av att använda sig av laborativt material i matematik för att på så sätt befästa begrepp. Syftet är att skapa ”broar” mellan det konkreta och det abstrakta inom matematiken och därigenom öka förståelsen. I detta arbete undersöks behovet, utifrån lärarnas syn, av laborativt material på högstadiet. Syfte och frågeställningarEtt intresseområde som alltid har följt mig är praktisk matematik. Utifrån detta intresse har jag formulerat mina frågeställningar och mitt syfte. Med denna studie vill jag ta reda på mer om laborativ matematik i matematikundervisning. Syftet med min studie är att undersöka lärarnas erfarenheter av laborativ matematik - finns det behov av en matematikverkstad på högstadiet? Frågeställningar:•Vilka vinster ser lärare som använder sig av laborativt material med detta arbetssätt?•Hur arbetar lärarna i studien med planering och genomförande av matematikundervisningen?TeoriI min studie utgår jag ifrån systemteori och hur denna teori är uppbyggd. Tanken med systemteori är att alla delar i systemet, på alla nivåer, påverkar varandra och är beroende av varandra. I denna studie påverkar individ, grupp och organisation varandra och samspelar i skolans verksamhet. För att få till en förändring i ett sådant system krävs att alla delar i systemet är involverade. Individen måste betraktas utifrån helheten, i det sammanhang som individen ingår. MetodEmpirin som samlats in kommer från olika skolor. Fokus har jag lagt på att välja skolor som arbetar aktivt med laborativ matematik och skolor som väljer att inte arbeta praktiskt. Samtliga lärare som ingått i studien är behöriga och legitimerade matematiklärare med minst fem års arbetslivserfarenhet. Jag valde att skicka ut 12 frågeformulär med öppna frågor, en del formulär kompletterades med följdfrågor för att få en tydligare och djupare bild av undervisningen. ResultatI min studie har jag inte kunnat dra någon slutsats kring viljan att arbeta med laborativt material eller oviljan att vilja arbeta laborativt. Lärarna har helt olika syn på att undervisa i matematik, några lärare använder sig regelbundet av laborativt material medan andra aldrig använder det samma. Alla lärarna är eniga om att det är viktigt att arbeta laborativt men vad begreppet innebär rent teoretiskt och praktiskt rådet det ingen enighet kring. Jag tycker mig kunna se ett samband mellan rektors prioriterande av fortbildning och satsning på matematikämnet, och mot en positivare inställning till att arbeta laborativt parallellt med den traditionella undervisningen. ImplikationerForskare och författare menar att matematikundervisningen måste förändras i Sverige. Skolverket har satsat på fortbildning för matematiklärare och lägger betoningen på kollegialt lärande. Många lärare behöver ett nytt synsätt kring matematikundervisningen. För att få till en förändring krävs det en samverkan genom hela systemet från individ, grupp till organisation. Det är viktigt att matematiklärarna tillsammans sätter sig ner och tolkar kunskapskraven från Lgr 11 (Skolverket, 2011), utifrån nya perspektiv så att det skapas en samsyn där lärarna kommer fram till en gemensam utgångspunkt att jobba vidare med. Undervisningens mål är att förklara och befästa begrepp och skapa broar mellan konkret matematik och abstrakt matematik. I detta arbete är det en fördel att använda konkret material. Meningen är inte att lärarna ska tvingas använda laborativt material inom alla områden utan materialet ska användas där det känns naturligt i t.ex. sannolikhetslära, ekvationer, geometri och bråk. Min utmaning blir att skapa en samsyn kring laborativ matematik och belysa fördelarna med detta material. Konkret material är inte alltid självklart på högstadieskolor, här sker undervisning oftast traditionellt med tyst räkning i matematikboken. Jag vill bidra till att fler matematiklärare påbörjar ett förändringsarbete som, upplever jag, är nödvändigt för en del skolor.
APA, Harvard, Vancouver, ISO, and other styles
4

Staaf, Elin, and Emilie Nilsson. "Laborativ matematik : - Fem pedagogers syn på laborativ matematik." Thesis, Högskolan i Halmstad, Sektionen för lärarutbildning (LUT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-17197.

Full text
Abstract:
The students are usually eager to develop their mathematical learning. However, the Skolverket can see that this eagerness passes in the early years of school. A study shows that a varied mathematical education creates enthusiasm to learn, which can decrease the negative view of mathematics. The purpose of this study is to see how five pedagogues use laboratory mathematics, their approaches to laboratory mathematics as well as to find out their role in the laboratory education. The result of the study is based on interviews with the pedagogues, who are all teachers for students in year F-3. All of the pedagogues work in a laboratory way, but to different extents. The study shows that the pedagogues aim to make the mathematics as concrete and everyday as possible. The pedagogues use the laboratory way of working and materials in different ways and have slightly different views of what counts as laboratory material. Further, the study shows that there are more possibilities than obstacles with the laboratory way of working. The five pedagogues all agree that this way of working is beneficial for the pupils, especially for the students who are poor achievers. The possible obstacles raised by the pedagogues were lack of time and to some extend shortage of material. Two important factors within this way of working are communication and briefings.
APA, Harvard, Vancouver, ISO, and other styles
5

Petersson, Malin, and Caroline Bäckström. "How does a Government Lower Primary School in India work with mathematics? - A study on how the teachers’ mathematical beliefs affect the norms operating in the classroom." Thesis, Malmö högskola, Lärarutbildningen (LUT), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-35819.

Full text
Abstract:
Denna studie beskriver hur en kommunal grundskola i sydvästra Indien undervisar matematik.Vår frågeställning var: Hur fungerar en indisk statlig grundskola arbetar med matematik? Vilka är lärarnas uppfattningar om skolans sätt att undervisa? För att ha möjlighet att fördjupa oss i frågorna undersökte vi även Hur lärarnas föreställningar om matematik påverkar normerna i klassrummet utifrån ramen av Yack och Cobbs normteori. Det är en kvalitativ studie där vi utförde observationer av undervisningen och intervjuer med lärare och rektorn på skolan om deras syn på matematikundervisningen, under tre veckor. Vi samlade också information om och dokumenterade deras matematikverkstad.Utifrån våra intervjuer och observationer kunde vi dra slutsatsen att samtliga på skolan arbetade med en aktivitetsbaserad undervisning där matematik lärs med hjälp av manipulativt, laborativt material. De arbetade tillsammans i ett arbetslag med en strävan att uppfylla läroplanens mål och med en gemensam arbetsmetod. Vi fann också att lärarnas värderingar och föreställningar om hur matematik ska läras ut, påverkar de normer som verkar i klassrummet.Denna studie kan inte generaliserbar eftersom detta är en fallstudie på denna skola. Dock förespråkar den indiska läroplanen att undervisningen ska ske utifrån elevnära aktiviteter, men matematikverkstaden på denna skola var speciell och utvecklad på denna skola.
For our study, we visited a Government Lower Primary School in India to inquiry about how a school in another schooling context teaches mathematics. Our research questions were: How does an Indian Government Lower Primary School work with mathematics? What are the teachers' perceptions of the school’s teaching approach? In addition to these questions and to inquire deeper into this subject, we also investigated How do the teachers’ perceptions and method of teaching connect to Yackel and Cobb’s framework of the different kinds of norms operating in the classroom?We did a qualitative study, staying at the school for three weeks to interview teachers about their method of teaching mathematics as well as observing how they were teaching mathematics and the norms that operated in the classroom. We also gathered information about their mathematics laboratory. During our interviews and observations we came to the conclusion that the school worked with activity-based learning by using manipulative materials. All teachers as well as the principal cooperatively strived to meet the curricula objectives, with the same teaching approach. We also found that the teachers’ values and beliefs about how mathematics should be taught, affect the norms operating in the classroom.This study cannot be generalised for all schools in India or even in this area. This study is a minor study which only considered one particular school which used an interesting teaching method, activity-based learning with manipulatives.
APA, Harvard, Vancouver, ISO, and other styles
6

Wicks, Robert Thornton. "Mutual information and quantifying coherent structures in laboratory and solar wind plasma data." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/3823/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Samo, Melissa. "Hur arbetar lärare med laborativ matematik? : En kvalitativ studie om hur fyra lärare arbetar främstmed avseende på laborativa inslag i undervisningen igrundskolan." Thesis, Södertörns högskola, Lärarutbildningen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-9047.

Full text
Abstract:
The objective of this research is to unveil how respective teacher consider about the laboratory working methods in mathematics. The research even includes answers to questions such as, what approaches and attitudes the teachers have and the methods they use when instructing their students when teaching mathematics, what the materials used by the teachers are and how important working creatively is to help the students develop their logical thinking. I also looked into issues that can help understand how and why teachers use laboratory mathematics for students in young ages. As a conclusion the research showed that the teachers aim to the goal that includes helping the students understand mathematics, strengthen their logical thinking and creativity. In the method section qualitative data was used, which contained four interviews with different pedagogues that daily interact with students in elementary school. The reasons for using the method of qualitative data was to help me deeper understand and answer the specific questions I had to the pedagogues and to even compare how different pedagogues differ in their approaches and methods. The theoretical framework I used throughout the research was based on and connected to the literature and theories provided during my studies and which showed that the majority of the teachers share similar views and thoughts about the laboratory working methods. During the research, the pedagogues concluded that the basis for increasing the students’ development and knowledge, creative methods of working by the teachers are needed. Working creatively provides the students a wider path of freedom of thinking logically and thereby solving problems. Summarizing the research, it is based on theories concerning laboratory mathematics and the attitudes and approaches taken by the teachers in this subject. In the research, the fact that the teachers use a wide spectrum of laboratory material, is studied and proven. My conclusion is that all the teachers concerned find it crucial to use the creative thinking as a basic approach of teaching in order to increase the interest for mathematics among the students.
APA, Harvard, Vancouver, ISO, and other styles
8

Young, Roland Michael Brendon. "Predictability of a laboratory analogue for planetary atmospheres." Thesis, University of Oxford, 2009. http://ora.ox.ac.uk/objects/uuid:b4f483a6-437c-4914-b94e-cb04d996b337.

Full text
Abstract:
The thermally-driven rotating annulus is a laboratory experiment used to study the dynamics of planetary atmospheres under controlled and reproducible conditions. The predictability of this experiment is studied by applying the same principles used to predict the atmosphere. A forecasting system for the annulus is built using the analysis correction method for data assimilation and the breeding method for ensemble generation. The results show that a range of flow regimes with varying complexity can be accurately assimilated, predicted, and studied in this experiment. This framework is also intended to demonstrate a proof-of-concept: that the annulus could be used as a testbed for meteorological techniques under laboratory conditions. First, a regime diagram is created using numerical simulations in order to select points in parameter space to forecast, and a new chaotic flow regime is discovered within it. The two components of the framework are then used as standalone algorithms to measure predictability in the perfect model scenario and to demonstrate data assimilation. With a perfect model, regular flow regimes are found to be predictable until the end of the forecasts, and chaotic regimes are predictable over hundreds of seconds. There is a difference in the way predictability is lost between low-order chaotic regimes and high-order chaos. Analysis correction is shown to be accurate in both regular and chaotic regimes, with residual velocity errors about 3-8 times the observational error. Specific assimilation scenarios studied include information propagation from data-rich to data-poor areas, assimilation of vortex shedding observations, and assimilation over regime and rotation rate transitions. The full framework is used to predict regular and chaotic flow, verifying the forecasts against laboratory data. The steady wave forecasts perform well, and are predictable until the end of the available data. The amplitude and structural vacillation forecasts lose quality and skill by a combination of wave drift and wavenumber transition. Amplitude vacillation is predictable up to several hundred seconds ahead, and structural vacillation is predictable for a few hundred seconds.
APA, Harvard, Vancouver, ISO, and other styles
9

Patke, Usha. "Inquiry-based laboratory investigations and student performance on standardized tests in biological science." ScholarWorks, 2011. https://scholarworks.waldenu.edu/dissertations/1089.

Full text
Abstract:
Achievement data from the 3rd International Mathematics and Sciences Study and Program for International Student Assessment in science have indicated that Black students from economically disadvantaged families underachieve at alarming rates in comparison to White and economically advantaged peer groups. The study site was a predominately Black, urban school district experiencing underachievement. The purpose of this correlational study was to examine the relationship between students' use of inquiry-based laboratory investigations and their performance on the Biology End of Course Test, as well as to examine the relationship while partialling out the effects of student gender. Constructivist theory formed the theoretical foundation of the study. Students' perceived levels of experience with inquiry-based laboratory investigations were measured using the Laboratory Program Variable Inventory (LPVI) survey. LPVI scores of 256 students were correlated with test scores and were examined by student gender. The Pearson correlation coefficient revealed a small direct correlation between students' experience in inquiry-based laboratory investigation classes and standardized test scores on the Biology EOCT. A partial correlational analysis indicated that the correlation remained after controlling for gender. This study may prompt a change from teacher-centered to student-centered pedagogy at the local site in order to increase academic achievement for all students. The results of this study may also influence administrators and policy makers to initiate local, state, or nationwide curricular development. A change in curriculum may promote social change as students become more competent, and more able, to succeed in life beyond secondary school.
APA, Harvard, Vancouver, ISO, and other styles
10

Toro, Clarke Jose Antonio. "A participative and individualized laboratory| A strategy for increasing student success in college-level math courses." Thesis, University of Puerto Rico, Rio Piedras (Puerto Rico), 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10116943.

Full text
Abstract:

This research was carried out within a qualitative research paradigm. The objective was to observe, analyze and enrich pedagogical practice through the use of pedagogical learning strategies. The learning strategy was a participative and individualized lab carried out during a research project in a non-Traditional Laboratory (LnT). The primary aim of this research was to observe if the LnT assist the students and in this way maximizes success and knowledge in the Introductory Math course (MATE3001) on the University of Puerto Rico campus.

The investigation questions were discussed in the light of each of the strategies of information collected, personal experience and revision of literature. The methodology used was of a qualitative nature in which the student reflected on the process experienced in the LnT. Seven participants of the math course (MATE3001) who formed part of the LnT in a voluntary manner were interviewed at the beginning and at the completion of the research. The purpose of the interviewed was to discover the participant opinion regarding the pedagogical impact of the LnT. Finally, the research professor made an observation in order to discover of the LnT strategy had the anticipated acceptance by the students.

The LnT contributed to: (1) students improved their study habits; (2) the students had greater participation in the solution of math problems, their practice and discussion; (3) they accepted that the research professor supervise their work as it was carried out and understood that the presence was for their benefit. Also, the findings of this research were contrasted with the Theory of reciprocal determinism, sources of self-efficacy and self-regulation of Bandura with the impact that these have on learning (Bandura, 1986, 1989a, 1989b). It was also found as the implicit theory (Yeager & Dweck, 2012) resurges in the LnT the effects on interest, student’s resilience and situational motivation (Nolen, Horn, & Ward, 2015) which occurs during the living out of the lab experience. LnT stimulates the student, creates security and increases confidence in the solution of math problems.

APA, Harvard, Vancouver, ISO, and other styles
11

Brizendine, Laora Dauberman. "The effects of teaching in a professional development school and the National Council of Teachers of Mathematics Professional standards." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1175.

Full text
Abstract:
Thesis (Ed. D.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains viii, 114 p. Vita. Includes abstract. Includes bibliographical references (p. 84-87).
APA, Harvard, Vancouver, ISO, and other styles
12

Mammana, Maria Flavia, and Mario Pennisi. "A class practice to improve student’s attitude towards mathematics." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-80613.

Full text
Abstract:
For many students, mathematics, traditionally thought to be difficult and dull, is often considered inaccessible, generating a negative attitude towards it. In order to encourage a positive attitude towards mathematics, we propose class practices that, through research activities, will lead the students to experiment a similar path to the one that has given, as a final product, a structured theory, so as to enhance their self-efficacy, give a correct vision of the discipline and stimulate positive emotions. This can be realized, for example, as a “laboratory activity” in which the students compare ideas, intuitions, arguments, and work together to obtain results, using their critical capabilities in a collaborative learning activity. A team of university professors and high school teachers has developed a laboratory activity that focuses on some properties of quadrilaterals. The activity has at any rate been experimented in different first biennium classes of some high schools and has obtained very good results.
APA, Harvard, Vancouver, ISO, and other styles
13

Manto, James. "A correlation study of ACCUPLACER math and algebra scores and math remediation on the retention and success of students in the Clinical Laboratory Technology Program at Milwaukee Area Technical College." Menomonie, WI : University of Wisconsin--Stout, 2006. http://www.uwstout.edu/lib/thesis/2006/2006mantoj.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Axén, Fredrik. "Laborativ matematik : Att variera undervisningen med alternativa metoder." Thesis, Karlstad University, Faculty of Technology and Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-3823.

Full text
Abstract:

Denna rapport handlar om hur man som lärare kan variera undervisningen i matematik med en fokusering på laborativ matematik. Den riktar sig främst mot gymnasiet men är även aktuell för både för yngre och äldre åldrar. Rapporten behandlar lärares och elevers syn på undervisning samt ger konkreta förslag på hur sådan undervisning kan gå till. Syftet med rapporten är att undersöka vad det finns för alternativ till traditionell undervisning och presentera dessa. Metoden som använts är intervjuer där jag tagit kontakt med lärare som är kända för att använda alternativa undervisningsmetoder och laborativ matematik. Totalt fem intervjuer.

 

Resultatet visar på att undervisningen i matematik är enformig och att den bör varieras för att bli lärorik och intressant. Rapporten ger konkreta förslag på hur sådan undervisning kan gå till. Flera lärare vill testa alternativ undervisning men tvekar eftersom de inte vet att den fungerar eller anser att det inte finns tid till sådan arbetsmetod. En varierad, laborativ undervisning verkar ge goda resultat men det finns inga vetenskapliga undersökningar som bevisar detta.


This report investigates various ways of diversifying mathematics teaching, especially elaborative mathematics. Primarily it focuses upper secondary school, but the results should have an impact on lower and higher levels as well. From an account of teacher and student views the report provides some concrete suggestions for improvement. The purpose of the report is to investigate alternatives for the traditional ways of teaching. Five teachers known for their experience on alternative teaching methods and on laboratory mathematics have been interviewed.

 

The result shows that mathematics teaching is uniform and that it needs to be diversified. The report presents a sample of ideas for such teaching. Many teachers are willing to try this type of teaching but hesitate since there are no proofs of positive results or because there is too little time for such methods. A diversified, laboratory teaching seems to contribute good results but this has not been proved.

APA, Harvard, Vancouver, ISO, and other styles
15

Khan, Sumbul. "Improvement of Pedagogical Laboratory Based Learning: Multimedia Enhanced Instructional Methods." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1297.

Full text
Abstract:
In engineering technology and other scientific-based education, lab-based courses play a crucial role (Ma & Nickerson, 2006). Even though laboratory experience in student learning is crucial, it faces some problems. Due to insufficient laboratory conditions that lead to overcrowding and inability to view demonstrations, the effectiveness of hands on experience declines (Tiwari & Singh, 2011; Tuysuz, 2010). Considering the limitations that constrain lab experience, investigating and implementing alternatives to enhance pedagogical laboratory based learning becomes inevitable. This study investigates multimedia enhanced pedagogical teaching methods for delivering laboratory instruction to students. The purpose of this study was to improve pedagogical laboratory based learning. First, this study implemented a multimedia enhanced pedagogical laboratory based instructional method. Second, this study evaluated the impact of multimedia enhanced instructional method on student learning outcomes to assess improvement in pedagogical laboratory based learning. To evaluate the impact of multimedia enhanced instructional method on student learning outcomes, a student population was subjected to 1) traditional laboratory lecture and 2) video lecture. This study used two different assessment techniques to evaluate the instructional methods 1) surveys and 2) quizzes. The use of these different assessment techniques achieved two purposes. First, the surveys allowed the study to receive students’ evaluation on the lecture in order to compare the two types of instructional methods. Second, the quizzes allowed measuring the students’ understanding of the demonstrations in order to evaluate the impact of multimedia enhanced instructional method on pedagogical laboratory based learning. Survey results revealed that based on overall evaluations, students prefer traditional lectures in comparison to video lectures in terms of level of interest and engagement. Furthermore, quiz results revealed that multimedia enhanced instructional methods do not have an impact on pedagogical laboratory based learning.
APA, Harvard, Vancouver, ISO, and other styles
16

Amaral, Dhiego Vieira do. "Reflexões sobre a implantação de um Laboratório Interativo de Matemática (LIM): Limitações, inovações e contribuições." Universidade Estadual da Paraíba, 2016. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2736.

Full text
Abstract:
Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2017-02-22T15:41:23Z No. of bitstreams: 1 PDF - Dhiego Vieira do Amaral.pdf: 4309498 bytes, checksum: 42e11c42a894f95a6d71053306751dfd (MD5)
Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2017-03-07T16:07:57Z (GMT) No. of bitstreams: 1 PDF - Dhiego Vieira do Amaral.pdf: 4309498 bytes, checksum: 42e11c42a894f95a6d71053306751dfd (MD5)
Made available in DSpace on 2017-03-07T16:07:57Z (GMT). No. of bitstreams: 1 PDF - Dhiego Vieira do Amaral.pdf: 4309498 bytes, checksum: 42e11c42a894f95a6d71053306751dfd (MD5) Previous issue date: 2016-02-14
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The present work aims to present a research developed about the Interactive Laboratory of Mathematics (LIM), which was a donation from the State Government of Paraíba to most of the schools of the state network. In our research, we will try to identify if the LIM and the way it was inserted in the schools is convergent to what the literature presents about the implantation and use of the Laboratory of Mathematics Teaching (LEM) in the educational institutions, besides investigating in parallel the contribution that The same can give the teacher in the development of his work. Thus, we developed our investigative activity through the LIM, verifying and evaluating the use of the same in a high school class (2nd year). Our work is based on research already published, where we identified that the use of the Mathematics Teaching Laboratory (LEM) in mathematics classes is being encouraged. Among these scholars are: Silva (2012), Lorenzato (2006, 2010), Turrione (2004), Ferronato (2012), among others. In addition, we seek to make a discussion about the new reality and challenges that the teaching work has faced. This study is of a qualitative nature, in which I was a researcher in a teacher's classroom. Among the results obtained, we observed thet the LIM is not in agreement with what the literature presentes about the implantion and use of the Mathematics Laboratory in the school. In addition, the way in which it was implanted can misconceptions about the LEM.
O presente trabalho objetiva apresentar uma pesquisa desenvolvida a respeito do Laboratório Interativo de Matemática (LIM), doado pelo Governo do Estado da Paraíba para a maioria das escolas da rede estadual. Em nossa pesquisa buscamos identificar se o LIM e a maneira como ele foi inserido nas escolas está convergente ao que a literatura apresenta sobre a implantação e utilização do Laboratório de Ensino de Matemática (LEM) nas instituições de ensino, além de investigarmos paralelamente a contribuição que o mesmo pode dar ao docente no desenvolvimento do seu trabalho. Assim, desenvolvemos nossa atividade investigativa através do LIM, verificando e avaliando a utilização do mesmo em uma turma do Ensino Médio (2º ano). Nosso trabalho está fundamentado em pesquisas já publicadas, onde identificamos que a utilização do Laboratório de Ensino de Matemática (LEM) nas aulas de matemática está sendo incentivado. Dentre estes estudiosos estão: Silva (2012), Lorenzato (2006, 2010), Turrione (2004), Ferronato (2012), entre outros. Além disso, buscamos fazer uma discussão a respeito da nova realidade e desafios aos quais o trabalho docente tem se depara do e enfrentado. Esse estudo é de cunho qualitativo, no qual fui um pesquisador na sala de aula de um docente. Dentre os resultados obtidos, observamos que o LIM não está de acordo com o que a literatura apresenta a respeito da implantação e utilização do Laboratório de Matemática na escola, além disso, a maneira como ele foi implantado pode criar concepções erradas a respeito do LEM.
APA, Harvard, Vancouver, ISO, and other styles
17

Elin, Tarakkamäki, and Jaska Sanna. "Det laborativa materialets och arbetssättens plats i läromedel och undervisning : En kvalitativ studie som undersöker hur laborativt material och arbetssätt framhålls och behandlas inom området bråk i olika läromedel, samt hur lärare beskriver att de undervisar utifrån detta." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-48911.

Full text
Abstract:
Studien syftar till att få kunskap om hur laborativt material och arbetssätt framhålls och behandlas inom området bråk i olika läromedel. Vidare undersöker vi även hur lärare undervisar laborativt utifrån dessa läromedel. För att samla in data har vi använt oss av metodtriangulering i form av granskning av läromedel och intervjuer. De läromedel som har granskats är Favorit matematik, Eldorado och Prima matematik. För att bredda kunskapen inom området intervjuades lärare som var aktiva användare av dessa läromedlen i sin undervisning. Med hjälp av variationsteorin har vi även analyserat de laborativa inslagen i läromedlen för att se på dess relevans i relation till variationsmönstrena kontrastering och generalisering och därmed hur elevers lärande främjas genom läromedlens föreslagna arbetssätt. Resultatet visar att de tre granskade läromedlen skiljer sig åt samtidigt som de har många likheter. Samtliga läromedel har tagit i beaktning att det laborativa materialet behöver ta plats i undervisningen på ett eller annat sätt. Dessa läromedel ger eleverna möjlighet att utforska med något slags laborativt material. Studiens slutsats blir således att vi kan se att läromedlen, på ett eller annat sätt, bidrar med laborativt material och arbetssätt. Utifrån variationsteorins sätt att se på lärande passar Eldorados laborativa arbetssätt bäst in på de variationsmönster vi granskat.
The study aims to gain knowledge about how laboratory material and working methods are highlighted and treated in the field of fraction in different teaching materials, and how teachers describe that they teach based on this. In order to collect data, we have used method triangulation in the form of examination of teaching material and interviews. The teaching materials that have been examined are Favorite Mathematics, Eldorado and Prima Mathematics. To broaden the knowledge in the field, teacher 's who were active users of these teaching materials were interviewed in their teaching. Using the theory of variation, we have also analyzed the laboratory elements in the teaching materials to look at its relevance in relation to the variation patterns of contrast and generalization and thus how pupils' learning is promoted through the proposed teaching methods. The result shows that the three study materials examined differ at the same time as they have many similarities. All teaching materials have taken into account that the laboratory material needs to take place in the teaching in one way or another. These teaching materials allow students to explore with some kind of laboratory material. The study's conclusion thus becomes that we can see that the teaching aids, in one way or another, contribute with laboratory material and working methods. Based on variation theory's approach to learning, Eldorado's laboratory approach fits best with the variation patterns we examined.
APA, Harvard, Vancouver, ISO, and other styles
18

Äng, Michaela. "En kvalitatativ studie av lärares syfte gällande användningen med konkret material i den tidigare matematikundervisningen." Thesis, Mittuniversitetet, Avdelningen för ämnesdidaktik och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-30128.

Full text
Abstract:
Denna studie handlar om hur och i vilket syfte lärare använder konkret material i sin matematikundervisning. Skolverket förespråkar idag att elever ska få möjlighet att använda sig av konkret material i undervisningen inom matematik. Forskning visar att konkret material leder till en ökad förståelse hos elever vid inlärningen av matematik. Forskare menar att det är läraren som avgör hur det konkreta materialet används samt vilken effekt det får. Detta examensarbete kommer lyfta fram lärares syn på konkret material och i vilket syfte som det används. Genom kvalitativa observationer och intervjuer med lärare från fyra olika skolor inom årskurs 1, visar resultatet att samtliga lärare har en liknande syn hur materialet bör användas men att hur lärarna använder det varieras. Utifrån de intervjuer som gjorts visar det sig att alla lärarna har en ambition att använda sig av konkret material, men under observationerna var det tre av fyra som gjorde det. I praktiken visar det sig däremot att det finns begränsningar som gör att det konkreta materialet inte används så som lärarna hade velat. Utifrån den forskningen som finns menar forskare att lärare har en avgörande faktor vilken effekt det konkreta materialet får för inlärningen hos eleverna.
This study is about how and for what purpose teachers use concrete materials in mathematics. The curriculum says that students should have the opportunity to use concrete materials in math. Research shows that concrete material leads to a better understanding for students in learning of mathematics. Researchers believe that the teacher is the important key person so the material will have the right effect. This thesis will highlight teachers' views on concrete material and the purpose for why it should be used. Through qualitative observations and interviews with teachers from four schools in grades 1, shows results that all teachers have a similar view of how it should be used, but it varies in how teachers are using it. Based on the interviews conducted, it appears that the majority of teachers have an ambition to make use of concrete materials. In practice, however, there are limitations that make the concrete material is not used so that teachers had wanted. Based on the research available is it the teacher who is the crucial factor for what effect the concrete material will have for the students learning.
APA, Harvard, Vancouver, ISO, and other styles
19

Shahine, Milad. "Lusten till matematik : En studie om hur elever kan utveckla lusten och motivationen till matematik genom olika arbetsätt." Thesis, Södertörn University College, Södertörn University College, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-3394.

Full text
Abstract:

The purpose of this study is to compare different ways to teach mathematics in the school's lower age groups, and to examine whether certain practices increase students' desire and motivation to learn the subject. The questions used to determine the purpose is the following:

  • What vision has the students in the class at maths?
  • How does the teaching of mathematics in the class look like?
  • What vision has the students in the class at working with different approaches in education?
  • Does the traditional approach  and the options that I am examining meet the steering documents requirements?

 The essay is organized as a qualitative study. The study was conducted in an elementary school in Sweden, third grade. The methods used included interviews with students and observations in the classroom. I have also completed three lessons in which I introduced students to three different approaches. Mathematics lessons that this third grade has, begins and ends with the students work individually with the math book. Is it possible to increase students' desire to mathematics by introducing different approaches? For example if the mathematic lesson is based on a mathematics contest, in which students work in groups to discuss and argue for solving various problems. When using different methods in mathematics does the students have the chance to find their way of learning, where the different approaches gives students the chance to examine the mathematics with different senses. All are individuals, and therefore have different ways to learn.

APA, Harvard, Vancouver, ISO, and other styles
20

Makdissi, Angellina. "Matematiksvårigheter : Värför och vad kan vi göra." Thesis, Södertörns högskola, Lärarutbildningen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-21117.

Full text
Abstract:
During my practical training period I observed that many of the students have a negative attitude against mathematics. I also observed that these students have a difficulty reaching the goals in the subject. In my opinion there are different factors that can be the reason to why these students experiences mathematics as a difficult subject in school. This is the reason why I wanted to find out which factors that lies behind the difficulties and how the pedagogues work to support these students. It is also significant that every single student get their rights to develop a positive attitude against mathematics and that the pedagogue supports the students in their development. The point with this degree project is to find out, with the help of three pedagogues, which factors that could lead to difficulties in mathematics with students. However, I also want to find out how the pedagogues teach out when they come across with students with mathematical problems. The three informants have many years of experience in teaching and they have worked with students in the elementary school for many years. They have also been teaching students with difficulties in mathematics. When I was interviewing the pedagogues I got the chance to give them attendant questions and also be accessory during the interview. The results of my study showed that there are different factors that can lead to difficulties in mathematics with students, but also that there are different kinds of ways to work for the pedagogue with students that have problems with the subject. These factors are emotional blocks, lacking in the teaching, reading- and writing difficulties and difficulties in the language. My study also showed that with the help from the pedagogue, the students can develop a more positive attitude against mathematics, thru social interactions, dialogues, group work and elaborative work.
APA, Harvard, Vancouver, ISO, and other styles
21

Carvalho, Diana Vieira de. "Laboratório de ensino de matemática: aplicação de recursos pedagógicos para o ensino de função e trigonometria." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/97/97138/tde-20112017-124713/.

Full text
Abstract:
Este projeto iniciou-se a partir da constatação de experiências do professor/pesquisador durante as aulas de matemática com relação ao comportamento dos alunos que demonstravam certa de ansiedade devido aos fracassos nas tentativas de aprender da forma tradicional. Para o desenvolvimento do projeto e análise dos resultados foi utilizada a Pesquisa Qualitativa, por ser um instrumento capaz de captar os valores, crenças e sentimentos humanos dando assim um significado às suas ações. Embasado pelas orientações de Lorenzato é relatada a implantação do Laboratório de Ensino de Matemática (LEM) numa escola particular cujas atividades foram realizadas com alunos do 9º ano do ensino fundamental. A proposta contempla a utilização de materiais didáticos, manipulativos e outros recursos pedagógicos para o ensino de função e de trigonometria dentro do LEM. A análise de dados foi embasada nos Registros de Representações Semiótica (RRS) de Duval, foram também consideradas as principais tendências em educação matemática, seus principais autores como D\'Ambrosio, na Etnomatematica; Biembengut, na Modelagem Matemática; Onuchic e Allevato, na Resolução de Problemas; Borba e Penteado nas Tecnologias de Informação e Comunicação (TIC), Smole nos jogos e nas orientações dos Parâmetros Curriculares Nacionais (PCN). A partir dos resultados obtidos foi constatado, por meio de questionários, observação do comportamento e das avaliações, uma melhora no entendimento dos conceitos de função e de trigonometria. Além disso, observou-se um aumento na compreensão de problemas matemáticos colocados pelo professor/pesquisador, amenizando a ansiedade em relação à matemática.
This project started from the teacher observation report in Mathematic lessons which had shown certain degree of anxiety in student\'s behavior in relation to failures of traditional method of learning. To develop the project and the outcome of analysis was employed Qualitative Research, to be an instrument capable to grasp the values, beliefs and human feelings thus giving signification to their actions. Based upon the Lorenzato guidelines is reported the implementation of the Mathematics Teaching Laboratory in a private school which activities were carried out with students from 9th grade of elementary school.The bringing considers the use of teaching materials, manipulatives and other teaching methods for teaching function and trigonometry in the Mathematics Teaching Laboratory. Data assays was based on semiotics representations records (RRS) Duval, were considered the major trends in mathematics teaching, its main authors like D\'Ambrosio, in Ethnomathematics; Biembengut in Mathematical Modeling; Onuchic and Allevato in Troubleshooting; Borba and Penteado in Information and Communication Technologies; Smole in classroom games and the guidelines of the National Curriculum Parameters. From the results it was found, by means of questioning, report of students behavior and tests, an improving in learning the concepts of function and trigonometry. In addition, there was an increase in understading mathematical problems posed by the teacher/ researcher, which reduced anxiety in relation to mathematics.
APA, Harvard, Vancouver, ISO, and other styles
22

Nääv, Holmstedt Cajsa, and Rebecca Österberg. "”Att lära matten med kroppen är ju toppen” : En statistisk undersökning angående lärares användning av laborativt material i matematikundervisningen i årskurs F-3." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-53403.

Full text
Abstract:
Denna studie undersöker hur laborativt material används i matematikundervisningen i åk. F-3. Studien tittar även på bakomliggande förklaringar till varför lärare använder materialet eller ej, samt vad som krävs för en ökad användning. Metodvalen i föreliggande studie är av både kvantitativ- och kvalitativ karaktär och består utav en online-enkät som besvarats av 199 lärare. Resultatet visar att laborativt material är ett relativt vanligt inslag i matematikundervisningen. Det påvisar även att lärares teoretiska kunskaper om, och erfarenheter av laborativt material påverkar i vilken utsträckning det nyttjas i undervisningen. Slutligen framgår det att lärare upplever att fortbildning skulle öka deras användande av laborativt material i undervisningen.
This study examines how laboratory material is used in mathematics teaching in class. F-3. The study also looks at the underlying explanations for why teachers use the material or not, as well as what is required for an increased use of the laboratory methods in mathematics teaching. The method choices in the present study are of both a quantitative and qualitative nature and consist of an online questionnaire answered by 199 teachers. The results show that laboratory materials are relatively common in mathematics teaching. It also shows that teachers' theoretical knowledge of, and experiences of laboratory materials affects the extent to which it is used in teaching. Finally, it appears that teachers feel that continuing education would increase their use of laboratory material in teaching.
APA, Harvard, Vancouver, ISO, and other styles
23

Mårtensson, Sofie. "Matematikundervisningens varierade arbetssätt : En kvalitativ undersökning om tre grundskolelärares undervisningsmetoder inom matematik." Thesis, Södertörns högskola, Lärarutbildningen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-5371.

Full text
Abstract:
There is a constant change in the world of school, new curricula and syllabi are made and the view of teaching and learning is changing. The desire to improve maths teaching in Swedish schools is strong, especially by laboratory work. How is it then that several teachers in our schools are still using the traditional way of teaching mathematics, which I consider to be relying a lot on the textbook and work for an automated approach? The purpose of my study is to investigate how three different math teachers on an F-5 school in the southern Stockholm area, choose to work with mathematics and why they choose to work according to a special approach. In order to obtain the information I seek, I have chosen to use the qualitative method to get a better understanding of my results. I have both observed the teachers during mathematics lessons on multiple occasions and interviewed the three teachers individually. The theories I have chosen to support my thesis on are the socio-cultural perspective and the cognitive perspective. Based on the results of my investigation I found that teaching in general assumes a lot from the textbook. Teachers in the survey feel a sense of security, to build upon the textbook, which they consider covers much of the knowledge students should have. The teachers use the textbook as a base and complements with laboratory features and communicate mathematics. The approach they choose to use has a lot of time allocated for teaching mathematics. Time isn’t enough for all the teachers to do what they want and they are worried that students will forget the basics of mathematics. Even the large number of students in the class plays the role of the choice of working, because all students should have time to develop.
APA, Harvard, Vancouver, ISO, and other styles
24

Green, Michael Jesse. "Motivation and Learning of Non-Traditional Computing Education Students in a Web-based Combined Laboratory." NSUWorks, 2015. http://nsuworks.nova.edu/gscis_etd/57.

Full text
Abstract:
Hands-on experiential learning activities are an important component of computing education disciplines. Laboratory environments provide learner access to real world equipment for completing experiments. Local campus facilities are commonly used to host laboratory classes. While campus facilities afford hands-on experience with real equipment high maintenance costs, restricted access, and limited flexibility diminish laboratory effectiveness. Web-based simulation and remote laboratory formats have emerged as low cost options, which allow open access and learner control. Simulation lacks fidelity and remote laboratories are considered too complex for novice learners. A web-based combined laboratory format incorporates the benefits of each format while mitigating the shortcomings. Relatively few studies have examined the cognitive benefits of web-based laboratory formats in meeting computing education students’ goals. A web-based combined laboratory model that incorporates motivation strategies was developed to address non-traditional computing education students’ preferences for control of pace and access to learning. Internal validation of the laboratory model was conducted using pilot studies and Delphi expert review techniques. A panel of instructors from diverse computing education backgrounds reviewed the laboratory model. Panel recommendations guided enhancement of the model design.
APA, Harvard, Vancouver, ISO, and other styles
25

Johnson, Sarah R. "Facilitating Conceptual Learning in Quantitative Chemistry." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/2617.

Full text
Abstract:
Traditional chemistry laboratory courses have a manual consisting of “step-by-step” experiments; instructions are given to complete experiments, requiring minimal information/concepts processing to be successful. This experience leaves students unprepared for the real-world, where critical thinking skills are needed to conduct research. This study focused on building analytical techniques, conceptual knowledge, and critical thinking skills used to solve research problems. A new quantitative chemistry laboratory manual was developed to transition students from traditional to inquiry-based experiments, requiring analytical method development. Data showed students having less difficulty using the new manual (0.8281 average difficulty) on method development exam questions and experiments, compared to the traditional manual (0.600 average difficulty). T-test showed significant difference between item difficulty, p = 0.029. Using null hypotheses, the new laboratory manual led to an increase in students’ conceptual knowledge and research skills. They were able to use their knowledge and skills to successfully solve real-world related problems.
APA, Harvard, Vancouver, ISO, and other styles
26

Kåresjö, Ida. "Laborativ matematik : Vad är syftet? Varför väljer lärare att arbeta laborativt? Vad säger eleverna?" Thesis, Södertörns högskola, Lärarutbildningen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-5338.

Full text
Abstract:
Research indicates that a more hands-on education in mathematics could improve how students relate to mathematics. Laboratory mathematics is a way of making mathematics more concrete.  How is the purpose of laboratory mathematics perceived? This thesis has its focus on the pupils’ perceptions of the purpose of laboratory mathematics, but the intention of the teacher involved is also investigated. The main research questions asked were: What is the teacher's definition of laboratory mathematics? Which is the teacher's purpose in using laboratory education? How do the students perceive the purpose of the laboratory teaching of mathematics? To answer the questions, I conducted a series of qualitative interviews. Data has been collected in a 3rd grade in Stockholm.  I interviewed a teacher and 17 students.  Results show that the teacher uses laboratory materials to ease the learning of mathematics and to concretize the content of mathematics. By using the phenomenographic method, I got five different preconceptions that students have about the purpose of laboratory education: Laboratory mathematics is for students who have difficulty with mathematics, laboratory mathematics allows more concentration in the classroom, using laboratory materials makes it easier to calculate, laboratory mathematics will help me when I calculate mathematics in every day situations and, finally when I use laboratory mathematics, I work with my hands. The study reaches the conclusion that teachers need to a highlight better the pedagogic purpose for the pupils to use laboratory mathematics.  Laboratory mathematics is in need of a higher status so that more students want to work with laboratory materials.
APA, Harvard, Vancouver, ISO, and other styles
27

Ishak, Sara. "”Lägg ner matteboken och använd varandra som stöd” : En intervjustudie av fem klasslärares syn på det laborativa arbetssättet i matematikundervisningen." Thesis, Södertörns högskola, Lärarutbildningen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-5406.

Full text
Abstract:
The purpose of this study is to examine the importance of a working laboratory in mathematics education, how it influences students’ learning and the confidence the teacher has in the laboratory component. Focus has been placed upon the advantages and disadvantages that could follow in the working method. The method used in this essay is qualitative in order to answer all the questions that arise along the way, and in order to use this method in interviews. The interviews that has taken place has been with five class teachers that are currently teaching at a elementary school between the years of 1-5. The purpose of this study has been answered by using its literature and the qualitative method with the class teachers. The results of the research show that teachers express gratitude towards the method in use for mathematics studies. The study also proves that students get more interested in learning and continuous learning. This contributed to a more flexible way of learning. By working in a laboratory, the students get to work with concrete materials in order to clarify mathematical concepts. The only downside seems to be the fact that students appear to become attached to this method, refusing any other learning techniques. This, however, should not stand in the way of using the laboratory method with children.
APA, Harvard, Vancouver, ISO, and other styles
28

Taskin, Sevgül. "Hur skiljer sig skolmatematiken för årskurs 3 i en turkisk och en svensk skola? : jämförelsestudie av undervisning i matematik i Turkiet och Sverige." Thesis, Södertörn University College, Lärarutbildningen, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-2903.

Full text
Abstract:

The purpose of the study is, through some aspects, to make it visible and compare the education in mathematics in classes 1-3 in Sweden and Turkey. I have also studied the mathematic lessons, textbook and teaching aids, examinations and the use of calculator, on the basis of steering documents in curriculum and syllabi. The method used in this study contains of qualitative interviews and have an unstructured character but also observations noted continuously. The result is a comparison between my own experiences and the observations connected to relevant theories and the questions.

APA, Harvard, Vancouver, ISO, and other styles
29

MaranhÃo, Roquelany Batista. "O LaboratÃrio de ciÃncias da natureza: uma proposta interdisciplinar para professores de matemÃtica do segundo ano do ensino mÃdio." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14917.

Full text
Abstract:
O ensino da MatemÃtica centrado em si mesmo, desvinculado do cotidiano e sem aplicabilidade direta, tem se mostrado como um fator desencadeante do desinteresse dos alunos da escola pÃblica pela disciplina MatemÃtica. O objetivo deste trabalho foi apresentar uma proposta de ensino, visando contribuir para minimizar o desinteresse dos alunos, pela disciplina MatemÃtica. O presente trabalho propÃs uma aÃÃo de cunho interdisciplinar como ferramenta de articulaÃÃo entre os conhecimentos da MatemÃtica e das CiÃncias da Natureza no Ãmbito dos laboratÃrios de FÃsica, de QuÃmica e de Biologia, com alunos de duas turmas de 2. ano do Ensino MÃdio de uma escola pÃblica do estado do CearÃ, com o intuito de desenvolver competÃncias e construir conhecimentos para a vida. Foram realizadas atividades (teÃricas e experimentais), de cunho interdisciplinar com Ãreas comuns a matemÃtica (a FÃsica, a QuÃmica e a Biologia), nos LaboratÃrios de CiÃncias da Natureza(LCN). Os resultados apontaram que os sujeitos aderiram aos procedimentos metodolÃgicos, e reagiram positivamente diante dos resultados obtidos por meio dos experimentos realizados no LCN. ApÃs o desenvolvimento das prÃticas, verificou-se que a atividade interdisciplinar contribuiu para uma visÃo da disciplina MatemÃtica de forma mais significativa, e concluiu-se, entÃo, que essa proposta forneceu ao professor uma ferramenta eficaz contra o desinteresse em matemÃtica pelos alunos.
The teaching of mathematics self-centered, disconnected from everyday life and without direct applicability, has proven to be a trigger disinterest of public school students in mathematics discipline. The objective of this study was to present an educational proposal, to contribute to minimize the disaffection of students in mathematics discipline. This paper proposed an action interdisciplinary nature as coordination tool between the knowledge of mathematics and natural sciences under the Physics laboratories of Chemistry and Biology, with students from two classes of 2nd year of High School a public school in the state of CearÃ, in order to develop skills and build skills for life. Activities (theoretical and experimental) were performed in an interdisciplinary nature with common mathematical areas (Physics, Chemistry and Biology), the Natural Sciences Laboratories (LCN). The results showed that the subjects joined the methodological procedures, and reacted positively on the results obtained through experiments on LCN. After the development of practices, it was found that the interdisciplinary activity contributed to a view of mathematics discipline more significantly, and concluded, then, that the proposal gave the teacher an effective tool against the disinterest in mathematics by students
APA, Harvard, Vancouver, ISO, and other styles
30

Andersson, Julia. "För- och nackdelar med olika undervisningsmaterial : En intervjustudie om undervisningsmaterial vid introduktionen av subtraktion." Thesis, Högskolan för lärande och kommunikation, Högskolan i Jönköping, Matematikdidaktik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-30795.

Full text
Abstract:
Studiens syfte är att undersöka sju lärares val av undervisningsmaterial vid introduktionen av subtraktion. Utgångspunkten i studien är taget ur livsvärldsfenomenologin, och data har samlats in genom semistrukturerade intervjuer där det kvalitativa datamaterialet sedan analyserats genom olika teman. Resultatet visar att samtliga lärare var överens om att konkret och laborativt material var att föredra vid introduktionen av subtraktion. Läroböckerna användes istället vid ett senare stadium för att hjälpa eleverna att befästa kunskaperna på en mer abstrakt nivå.
The aim of this study is to look into what teaching material seven teachers choose to use during the introduction of subtraction.The study has been inspired by life-world phenomenology, and has been conducted through semi-structured interviews, where the qualitative datasets later have been analyzed through different themes. The results show that all of the teachers agreed that concrete and laboratory materials where to prefer when introducing subtraction. The textbooks were used at a later stage to help the pupils consolidate their knowledge at a more abstract level.
APA, Harvard, Vancouver, ISO, and other styles
31

Figueiredo, Michele de Oliveira Ribeiro. "Estruturando e investigando o funcionamento do Laboratório de Educação Matemática e Educação Financeira (LABMAT-EF)." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/6147.

Full text
Abstract:
Submitted by Renata Lopes (renatasil82@gmail.com) on 2018-01-15T12:47:43Z No. of bitstreams: 1 micheledeoliveiraribeirofigueiredo.pdf: 4026365 bytes, checksum: 27a965388d7cfb17b3f1124ef074d6b2 (MD5)
Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-01-29T11:09:45Z (GMT) No. of bitstreams: 1 micheledeoliveiraribeirofigueiredo.pdf: 4026365 bytes, checksum: 27a965388d7cfb17b3f1124ef074d6b2 (MD5)
Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-01-29T11:09:55Z (GMT) No. of bitstreams: 1 micheledeoliveiraribeirofigueiredo.pdf: 4026365 bytes, checksum: 27a965388d7cfb17b3f1124ef074d6b2 (MD5)
Made available in DSpace on 2018-01-29T11:09:55Z (GMT). No. of bitstreams: 1 micheledeoliveiraribeirofigueiredo.pdf: 4026365 bytes, checksum: 27a965388d7cfb17b3f1124ef074d6b2 (MD5) Previous issue date: 2017-08-23
O presente trabalho apresenta uma pesquisa do Grupo de Investigação Financeiro-Econômica em Educação Matemática – GRIFE/UFJF dando continuidade à busca por uma Educação Financeira mais difundida no meio escolar e, no caso deste trabalho, levando à criação de um Laboratório de Educação Matemática e Educação Financeira. Nossa principal indagação perante a situação socioeconômica e de endividamento dos jovens-adultos foi no que diz respeito ao papel da escola enquanto formadora de crianças e adolescentes. De que maneira é possível utilizar problematizações e cenários para investigação e reflexão para convidar jovens consumidores a se conscientizarem de seus papéis na sociedade de consumo? Esta investigação propõe então a criação do LABMAT-EF, espaço em que o professor pesquisador e os estudantes participantes possam discutir temas do cotidiano. Nossa questão de pesquisa se concentra em como estruturar o LABMAT-EF e quais discussões podem ser trabalhadas nele, bem como de que forma elas serão mais bem trabalhadas. O laboratório será criado com a participação direta dos estudantes para que esse ambiente pertença a eles e para que tenha uma identificação que priorize a linguagem do estudante e o acesso à informação de forma eficaz, com espaço para a discussão e reflexão dos tópicos trabalhados. Objetiva-se problematizar conteúdos de Educação Matemática Financeira, compartilhamento de experiências, reflexões e estímulo ao pensamento crítico, buscando evitar futuramente situações de endividamento, exploração de recursos naturais, além da satisfação pessoal relacionada ao consumo irresponsável. Para isso optou-se pela metodologia de pesquisa qualitativa, mais especificamente a pesquisa-ação, que torna os educandos-pesquisadores participantes do projeto, junto à educadora-pesquisadora. Para alcançar estes objetivos buscamos embasamento teórico nos trabalhos de Ole Skovsmose, Paulo Freire e Sérgio Lorenzatto. Os resultados foram satisfatórios ao notar estudantes participantes e engajados nas atividades, formulando ações adequadas para o contexto social em que vivem e capazes de interpretar melhor a realidade a sua volta, reconhecendo armadilhas do consumo e se colocando como responsáveis diretos no processo de desconstrução do consumismo exagerado. Sendo assim, acreditamos que conseguimos um material interessante para que professores atuem problematizando ações cotidianas de educação financeira e cenários para investigação.
The present work shows a research from the Economical-Financial Investigation Group in Mathematics – GRIFE/UFJF giving a contiguity to the search for a more diffuse Financial Education in the schooling environment and, specifically in this work, causing the creation of a Financial Education and Mathematical Education Laboratory. Our main inquiry before the socioeconomic and indebtedness situation of young adults was concerning the school’s role as a training entity for children and teenagers. How is it possible to use questionings and reflexive and investigative scenarios to invite young consumers and make them raise awareness about their roles in the consumer society? This investigation suggests the creation of LABMAT-EF, space in which the researcher professor and the participating students can debate topics from daily life. Our research question focuses in how to structure the LABMAT-EF and which discussions can be worked on it, as well as the way these discussions can be conducted. The laboratory is going to be created with the direct involvement of the students so this enviroment can belong to them and for it to have an identification that gives priority to the student's speech and allows the access to information in an effective way, enabling discussion and reflection about the topics they are going to study. The aim is to have a critical look at Financial Mathematical Education topics, with the sharing of experiences, reflections and stimulation to critical thinking, trying to prevent future scenarios of indebtedness, exploration of natural resources and also preventing satifaction through irresponsible consumption habbits. For this, the qualitative research methodology was chosen, specifically action-research, which makes the students-researchers project participants together with the educating-researcher.To reach these goals, we look for theoretical background in Ole-Skovsmose, Paulo Freire and Sérgio Lorenzatto. The results obtained were satisfactory, it was possible to notice participants engaged in their activities, formulating adequate actions for the social context in which they live in and able to interpret their surrounding reality better than before, recognizing commercial appealand choosing to act as directly responsible in the deconstruction process of exaggerate consumerism. Therefore, we believe we have obtained an interesting product for teachers to use as they question daily life situations of financial education and investigation scenarios.
APA, Harvard, Vancouver, ISO, and other styles
32

Skärberg, Jennie. ""Säg aldrig till ditt barn att matematik är svårt" : Sex pedagogers tankar och resonemang kring sitt arbetssätt i matematikundervisning för elever i år F-6." Thesis, Södertörns högskola, Lärarutbildningen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-5292.

Full text
Abstract:
There has been a lot of debate in media about mathematics teaching in grade school in Sweden. Many students experience that mathematics in grade school is abstract, which leads to decreased interest of mathematics in early years. An international study indicates that Swedish students in class 4 do not fulfill the mean for mathematics according to EU/OECD countries. The study also shows that Sweden practice a textbook driven education, compared to other countries. The aim for this study was to find out how a few pedagogues for class F-6 teach mathematics, and why they have chosen to educate the way they do. It was relevant to investigate if these pedagogues use a laboratory education method in their teaching, and if so, which profits and disadvantages they experience by using this method. I decided to use qualitative interviews, according to an interview guide, which agreed to the aim and the question form of the study. The empiric material that was collected from these interviews were analyzed and discussed with support from theories and earlier research, which I found relevant to this study. In the theoretical reference frame, I decided to use the most relevant of Piagets, Vygotskijs and Deweys views and thoughts of children’s knowledge, development and learning. The conclusion for this study is that all pedagogues used variation in their operation mode and in their mathematic education, where the textbook and a laboratory education are included.  Their choice of using a certain method is founded on the experience where many students think that mathematics is an abstract subject where all are different and learn mathematics in different ways. The pedagogues say that variation in operation mode where the students can participate in their learning at the same time as the mathematics makes visible, increases the condition for the students to understand mathematics. In the investigation, it was found that some of the pedagogues discovered a big student group alongside with few education hours that are reserved for mathematics, as a difficulty to use a laboratory working method in the spread they would like to.
APA, Harvard, Vancouver, ISO, and other styles
33

Sandbach, Steven D. "Mathematical and laboratory modelling of ventilation." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506639.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Flyrén, Barrsäter Veronica. "Abakus, ett verktyg för sum-elever?" Thesis, Umeå universitet, Institutionen för naturvetenskapernas och matematikens didaktik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-170299.

Full text
Abstract:
Syftet med den här studien är att undersöka om och hur abakusen kan vara ett alternativt verktyg för elever med svårigheter i matematik. Sex intervjuer med matematiklärare har genomförts. En av dessa lärare arbetade på gymnasiet, tre på högstadiet och två på lågstadiet. Tre använder eller har använt abakusen och övriga tre har ingen erfarenhet av den. Studiens resultat visar att samtliga deltagare är positiva till att använda abakusen som ett alternativt verktyg för elever med svårigheter. De ansåg dock att matematiklärare behöver en bred kunskap om abakusen, för att arbeta med eleverna, och att det finns en kunskapströskel som eleverna behöver komma över för att lära sig hur abakusen fungerar. Studiens resultat visar också att de deltagande matematiklärarna anser att speciallärare har en betydelsefull roll att fylla i detta sammanhang, som rådgivare till lärare angående abakusens användning samt funktion. Detta, i kombination med att lärarna ger elever grunderna i matematik, leder till att elever med svårigheter i matematik lättare tar till sig kunskap i matematikämnet. Avslutningsvis diskuteras betydelsen av alternativa verktyg för elever som påvisar brister i matematiken samt speciallärares uppdrag att främja, förebygga och stödja elever i svårigheter.
The purpose of this study is to investigate if and how the abacus can be an alternative tool for students with mathematics difficulties. Six interviews with mathematics teachers have been conducted. One of these teachers worked in high school, three in high school and two in primary school. Three use or have used the abacus and the other three have no experience with it. The study's result show that all participants are positive about using the abacus as an alternative tool for students with difficulties. However, they felt that mathematics teachers needed a broad knowledge of the abacus to work with the students, and that there was a knowledge threshold that the students needed to come across to learn how the abacus works. The study's result also show that the participating mathematics teachers consider that special education teachers have an important role to play in this context, as advising teachers about the use and function of the abacus. This, in combination with the teachers giving the students the basics of mathematics, makes it easier for students with difficulties in mathematics to gain knowledge in the mathematics subject. Finally, the importance of alternative tools for students demonstrating shortcomings in mathematics, as well as specialist teachers' assignments to promote, prevent and support students in difficulties, is discussed.
APA, Harvard, Vancouver, ISO, and other styles
35

de, Jongh Louise. "Laborativa aktiviteter : En analys av läromedel i matematik för årskurs fyra." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78368.

Full text
Abstract:
Studien syftar till att bidra med kunskap om, i vilken utsträckning läromedel i matematik föreslår laborativa aktiviteter. Forskning visar att det är gynnsamt för elever att arbeta laborativt. Metoden som valdes är en kvalitativ innehållsanalys. Det skapades ett analysschema med hjälp av tidigare forskning och läroplanen från 2011, specifikt för den här studien. Utifrån analysschemat analyserades tre olika läromedel för årskurs fyra i matematik. Studien har använt det sociokulturella perspektivet för att skapa förståelse för laborativa aktiviteter. En laborativ aktivitet genomförs antingen med ett laborerande arbetssätt eller ett konkretiserande arbetssätt. För att analysera och tolka resultaten har tidigare forskning och variationsteorin används.  Resultatet visar att laborativa aktiviteter främst förekommer inom kunskapsområde Taluppfattning och tals användning. Det visar även att det är laborerande arbetssätt som används mer än konkretiserande arbetssätt vid de laborativa aktiviteterna.  Pedagogiska material föreslås till störst andel av de laborativa aktiviteterna. Läromedlen i studien föreslår laborativa aktiviteter i olika stor utsträckning. Ett läromedel som föreslår få laborativa aktiviteter kräver mer av läraren. Det betyder att läraren själv får hitta och producera laborativa aktiviteter. Läromedel som föreslår många laborativa aktiviteter skapar förutsättningar för lärare att arbeta laborativt. Studien har bidragit till mer kunskap om laborativa aktiviteter i läromedel.
This study aims to contribute knowledge of what extent teaching materials in mathematics suggest laboratory activities. The teaching materials in the study suggest laboratory activities to various extent. The method chosen is a qualitative content analysis. An analysis scheme was created using previous research and curriculum from 2011, specifically for this study. Based on the analysis scheme, three different teaching materials for grade four, mathematics were analyzed. The study has used the socio-cultural perspective to create an understanding of laboratory activities. A laboratory activity is carried out either with a laboratory method or a concretized method. In order to analyze and interpret the results, previous research and the theory of variation have been used. The result shows that laboratory activities mainly occur in the knowledge areas of numerical understanding and the use of numbers. It also shows that laboratory methods are used more often than concretized methods in the laboratory activities. Educational materials are suggested for most laboratory activities. Research shows that it is beneficial for students to work with laboratory activities. A teaching material that suggests few laboratory activities requires more from the teacher. This means that teachers themselves have to find and produce laboratory activities. Teaching materials that suggest many laboratory activities creates conditions for teachers to work laboratory. This study has contributed to more knowledge about laboratory activities in teaching materials.
APA, Harvard, Vancouver, ISO, and other styles
36

Santos, Marisa Gomes dos. "Laboratório de educação matemática "Zaira da Cunha Melo Varizo": um mosaico sobre a formação de professores no IME/UFG." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/8528.

Full text
Abstract:
Submitted by JÚLIO HEBER SILVA (julioheber@yahoo.com.br) on 2018-05-29T17:53:46Z No. of bitstreams: 2 Dissertação - Marisa Gomes dos Santos - 2018.pdf: 2912249 bytes, checksum: 4ff08a93fb86ff055238b4bf3f81090e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-05-30T11:44:34Z (GMT) No. of bitstreams: 2 Dissertação - Marisa Gomes dos Santos - 2018.pdf: 2912249 bytes, checksum: 4ff08a93fb86ff055238b4bf3f81090e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Made available in DSpace on 2018-05-30T11:44:34Z (GMT). No. of bitstreams: 2 Dissertação - Marisa Gomes dos Santos - 2018.pdf: 2912249 bytes, checksum: 4ff08a93fb86ff055238b4bf3f81090e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-03-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The Laboratory of Mathematical Education "Zaíra da Cunha Melo Varizo" (LEMAT), was created in 1994 as an attempt to change a reality lived by the IME, where the abandon and failure rate of the course was high, and also with the objective of attending the specifics of the degree in mathematics at that institute. In this way, the objective of the present work is to investigate a teacher training immersed in LEMAT practices, seeking out to identify the strategies traced and narrated by the laboratory coordinators with perspectives to favor an initial and continuous formation of teachers, inserted in the context of the time (1994 -2015). The Survey uses Oral History as an methodological alternative and uses interviews as the main source of data, in addition to other written sources. In this sense, we chose to interview all the coordinators of the laboratory in that period (Zaíra da Cunha Melo Varizo, Wellington Lima Cedro, José Pedro Machado Ribeiro, Jaqueline Araújo Civardi, Maria Betânia Sardeiro dos Santos, Janice Pereira Lopes) as well as the Educational Technician (TAE) - Silmara Epifânia Castro Carvalho. We work with semi-structured interviews, which have been transcribed, sent to the collaborators for the correct corrections, etc., elaborated a textualization, which is an integral part of this dissertation. We construct a narrative analysis, which we call a mosaic, which is about transcription, mobilizing all the material found on the subject. This narrative shows that the laboratory has undergone changes both in its configuration and in its role for teacher training.
O Laboratório de Educação Matemática “Zaíra da Cunha Melo Varizo” (LEMAT), foi criado em 1994, como uma tentativa de mudar uma realidade vivida pelo IME, onde era alto o índice de desistência e reprovação no curso, e também com o objetivo de atender as especificidades da Licenciatura em matemática, naquele instituto. Desse modo, o objetivo do presente trabalho é investigar a formação de professores imersa nas práticas do LEMAT, identificamos algumas estratégias traçadas e narradas pelos coordenadores desse laboratório com vistas a favorecer a formação inicial e continuada de professores, inseridas no contexto da época (1994 -2015). A pesquisa utiliza a História Oral como alternativa metodológica e utiliza entrevistas como principal fonte de dados, além de consulta a fontes escritas. Neste sentido, optamos por entrevistar todos os coordenadores do laboratório nesse período (Janice Pereira Lopes; Jaqueline Araújo Civardi; José Pedro Machado Ribeiro; Maria Betânia Sardeiro dos Santos; Wellington Lima Cedro; Zaíra da Cunha Melo Varizo; ) bem como a Técnico em Assuntos Educacionais (TAE) - Silmara Epifânia Castro Carvalho. Trabalhamos com entrevistas semi-estruturadas, que foram transcritas, enviadas para os colaboradores para as devidas correções e, posteriormente, foi elaborada uma textualização, que faz parte integralmente dessa dissertação. Construímos uma análise narrativa, que chamamos de mosaico, que se trata da transcriação, mobilizando todo o material encontrado sobre o tema, inclusive alguns documentos (atas, resoluções, etc). Essa narrativa mostra que o laboratório tem passado por mudanças tanto em sua configuração quanto em seu papel para a formação de professores.
APA, Harvard, Vancouver, ISO, and other styles
37

Nunes, Célia Barros [UNESP]. "O processo ensino-aprendizagem-avaliação de geometria através da resolução de problemas: perspectivas didático-matemáticas na formação inicial de professores de matemática." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/102122.

Full text
Abstract:
Made available in DSpace on 2014-06-11T19:31:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-03Bitstream added on 2014-06-13T18:06:49Z : No. of bitstreams: 1 nunes_cb_dr_rcla.pdf: 3789615 bytes, checksum: dcaee776ef4788b9aa3cd4ba26eefddb (MD5)
Toda pesquisa começa com uma curiosidade do pesquisador e se apresenta como um ponto de partida para uma investigação. Assim, esta pesquisa tem como fenômeno de interesse trabalhar a Geometria Euclidiana, numa abordagem dinâmica, com alunos, futuros professores, do curso de Licenciatura em Matemática da Universidade do Estado da Bahia – UNEB, Campus X. Seu objetivo é o de investigar, compreender e evidenciar as potencialidades didático-matemáticas da Metodologia de Ensino-Aprendizagem-Avaliação de Matemática através da Resolução de Problemas nos processos de ensinar e aprender Geometria. É uma pesquisa de natureza qualitativa que foi desenvolvida seguindo orientações metodológicas de Thomas A. Romberg. Usou-se como procedimentos metodológicos na coleta de dados: a observação, o material escrito pelos alunos, questionários, filmagens, gravações e diário de campo. Dois projetos de ensino foram criados e aplicados nas disciplinas Didática da Matemática e Laboratório de Ensino de Matemática II, respectivamente. Na junção desses dois projetos, depois de aplicados, concluiu-se que essa é mais uma pesquisa no contexto da Educação Matemática que une as disciplinas trabalhadas como uma dupla necessária para a formação de professores. Ademais, sugere um trabalho feito com professores em formação inicial visando a sua própria formação e propicia momentos de reflexão e análise sobre as potencialidades que a Metodologia de Ensino- Aprendizagem-Avaliação de Matemática através da Resolução de Problemas oferece no sentido de incrementar a aprendizagem e melhorar os processos de ensino de Matemática, sobretudo o de Geometria.
Every search begins with a curiosity of the researcher and it is presented as a starting point for an investigation. This research has the phenomenon of interest to work Euclidean geometry, a dynamic approach, with students, future teachers, the Degree in Mathematics at the University of Bahia - UNEB, Campus X. Its goal is to investigate, understand and highlight the potential of teaching math-Teaching Methodology-Evaluation of Learning Mathematics through Problem Solving in the processes of teaching and learning geometry. . It is a qualitative research that was developed following methodological guidelines of Thomas A. Romberg. It used as instruments to collect data: observation, material was written by students, quizzes, films, recordings and field diary. Two education projects were created and applied in the disciplines of Didactics of Mathematics and Laboratory of Mathematics II, respectively. At the junction of these two projects, once implemented, it was concluded that this is another research in the context of mathematics education that unites the disciplines worked as a dual need for teacher training. Moreover, it suggests a work that was done with teachers in training to become self-training and provides moments of reflection and analysis on the potential that the methodology of Teaching-Learning-Evaluation of Mathematics through Problem Solving offers to enhance their learning and improve the processes of teaching mathematics, especially in geometry.
APA, Harvard, Vancouver, ISO, and other styles
38

Costa, Jaqueline Gomides da. "O laboratório de educação matemática na formação continuada do professor de matemática." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/3968.

Full text
Abstract:
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-27T14:16:28Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Jaqueline Gomides da Costa - 2014.pdf: 2057447 bytes, checksum: bda58a46b5f4b78c271d49a2760f15e1 (MD5)
Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-28T12:04:45Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Jaqueline Gomides da Costa - 2014.pdf: 2057447 bytes, checksum: bda58a46b5f4b78c271d49a2760f15e1 (MD5)
Made available in DSpace on 2015-01-28T12:04:45Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertação - Jaqueline Gomides da Costa - 2014.pdf: 2057447 bytes, checksum: bda58a46b5f4b78c271d49a2760f15e1 (MD5) Previous issue date: 2014-03-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
This study is the result of an investigation about the process of continuing education experienced by a teacher of Primary Education, of a public school in the state of Goiânia - GO, in the context of a pedagogical practice supported by the use of teaching resources belonging to a Mathematics Education laboratory. In the constitution of this research, we carry out an analysis of the process of reflection of the teachers own pedagogical practice and a review of the possible benefits of the use of elaborated and developed activities with the aid of the laboratory practice of the collaborative teacher and student learning resources. For this, we adopted theoretical framework authors dealing with themes such as, laboratory mathematics education, teachers training in math, and critical reflection on teaching practice. In this context, we adopt the approach of qualitative research in the form of participatory research, in order to analyze the educational practice of teachers of basic education, using as instruments for collecting data through participant observation, field diary, filming, the questionnaire and the semi-structured interview. In this perspective, the analysis of the data led us to observe the development of this work process in three categories: From naive curiosity to epistemological curiosity; development amid transformative practices; and the meaning of the experience for the teacher and students. The analysis of these data indicates a change in the practice of this teacher, including in relation to their attitude towards class.
Este trabalho é resultado de uma investigação sobre o processo de formação continuada, vivenciado por um professor da Educação Básica, de uma escola pública Estadual, da cidade de Goiânia - GO, no contexto de uma prática pedagógica apoiada no uso de recursos didáticos pertencentes a um laboratório de Educação Matemática. Na constituição desta pesquisa, realizamos uma análise do processo de reflexão desse professor sobre sua própria prática pedagógica e uma avaliação dos possíveis benefícios trazidos pelo uso de atividades elaboradas e desenvolvidas com auxilio de recursos didáticos laboratoriais à prática do professor colaborador e ao aprendizado dos alunos. Para tanto, adotamos como referenciais teóricos autores que tratam dos temas laboratório de educação matemática, formação de professores de matemática, reflexão crítica sobre a prática pedagógica. Nesse contexto, adotamos a abordagem de pesquisa qualitativa na modalidade de pesquisa participante, para realizar a análise da prática educativa do professor da Educação Básica, utilizando como instrumentos para a coleta de dados a observação participante, o diário de campo, filmagens, o questionário e a entrevista semiestruturada. Nessa perspectiva, a análise dos dados nos levou a constatar, no processo de desenvolvimento deste trabalho, três categorias: da curiosidade ingênua a curiosidade epistemológica; o desenvolvimento em meio às práticas transformadoras; o significado da experiência para o professor e alunos. A análise desses dados sinaliza uma mudança na prática desse professor, inclusive em relação a sua postura diante da turma.
APA, Harvard, Vancouver, ISO, and other styles
39

Nunes, Célia Barros. "O processo ensino-aprendizagem-avaliação de geometria através da resolução de problemas : perspectivas didático-matemáticas na formação inicial de professores de matemática /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/102122.

Full text
Abstract:
Orientador: Lourdes de la Rosa Onuchic
Banca: Adair Mendes Nacarato
Banca: Kátia Cristina Stocco Smole
Banca: Norma Suely Gomes Allevato
Banca: Rosana Giaretta Sguerra Miskulin
Resumo: Toda pesquisa começa com uma curiosidade do pesquisador e se apresenta como um ponto de partida para uma investigação. Assim, esta pesquisa tem como fenômeno de interesse trabalhar a Geometria Euclidiana, numa abordagem dinâmica, com alunos, futuros professores, do curso de Licenciatura em Matemática da Universidade do Estado da Bahia - UNEB, Campus X. Seu objetivo é o de investigar, compreender e evidenciar as potencialidades didático-matemáticas da Metodologia de Ensino-Aprendizagem-Avaliação de Matemática através da Resolução de Problemas nos processos de ensinar e aprender Geometria. É uma pesquisa de natureza qualitativa que foi desenvolvida seguindo orientações metodológicas de Thomas A. Romberg. Usou-se como procedimentos metodológicos na coleta de dados: a observação, o material escrito pelos alunos, questionários, filmagens, gravações e diário de campo. Dois projetos de ensino foram criados e aplicados nas disciplinas Didática da Matemática e Laboratório de Ensino de Matemática II, respectivamente. Na junção desses dois projetos, depois de aplicados, concluiu-se que essa é mais uma pesquisa no contexto da Educação Matemática que une as disciplinas trabalhadas como uma dupla necessária para a formação de professores. Ademais, sugere um trabalho feito com professores em formação inicial visando a sua própria formação e propicia momentos de reflexão e análise sobre as potencialidades que a Metodologia de Ensino- Aprendizagem-Avaliação de Matemática através da Resolução de Problemas oferece no sentido de incrementar a aprendizagem e melhorar os processos de ensino de Matemática, sobretudo o de Geometria.
Abstract: Every search begins with a curiosity of the researcher and it is presented as a starting point for an investigation. This research has the phenomenon of interest to work Euclidean geometry, a dynamic approach, with students, future teachers, the Degree in Mathematics at the University of Bahia - UNEB, Campus X. Its goal is to investigate, understand and highlight the potential of teaching math-Teaching Methodology-Evaluation of Learning Mathematics through Problem Solving in the processes of teaching and learning geometry. . It is a qualitative research that was developed following methodological guidelines of Thomas A. Romberg. It used as instruments to collect data: observation, material was written by students, quizzes, films, recordings and field diary. Two education projects were created and applied in the disciplines of Didactics of Mathematics and Laboratory of Mathematics II, respectively. At the junction of these two projects, once implemented, it was concluded that this is another research in the context of mathematics education that unites the disciplines worked as a dual need for teacher training. Moreover, it suggests a work that was done with teachers in training to become self-training and provides moments of reflection and analysis on the potential that the methodology of Teaching-Learning-Evaluation of Mathematics through Problem Solving offers to enhance their learning and improve the processes of teaching mathematics, especially in geometry.
Doutor
APA, Harvard, Vancouver, ISO, and other styles
40

Delabona, Stênio Camargo. "A mediação do professor e a aprendizagem de geometria plana por aluno com transtorno do espectro autista (síndrome de Asperger) em um laboratório de matemática escolar." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/5798.

Full text
Abstract:
Submitted by Erika Demachki (erikademachki@gmail.com) on 2016-08-02T18:02:06Z No. of bitstreams: 2 Dissertação - Stênio Camargo Delabona - 2016.pdf: 4203075 bytes, checksum: ffd9a037190900bf6e632cebcb526297 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Approved for entry into archive by Erika Demachki (erikademachki@gmail.com) on 2016-08-02T20:12:25Z (GMT) No. of bitstreams: 2 Dissertação - Stênio Camargo Delabona - 2016.pdf: 4203075 bytes, checksum: ffd9a037190900bf6e632cebcb526297 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Made available in DSpace on 2016-08-02T20:12:25Z (GMT). No. of bitstreams: 2 Dissertação - Stênio Camargo Delabona - 2016.pdf: 4203075 bytes, checksum: ffd9a037190900bf6e632cebcb526297 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-03-15
Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG
Thinking of education as a process of human formation, based on social, cultural, historical relations in an inclusive context, is a challenge for teachers and researchers in all fields of knowledge. In this sense, this research aims to contribute to the inclusive education in mathematics of students with autistic spectrum disorders. This study set out to analyze the meaning given to the geometric object of study by a student with Asperger syndrome, through the application of a pedagogical proposal, which would favor designing activities in the School Mathematics Laboratory (SML). The object of the research is mediations designed in the SML and their impact on the process of argumentation and geometric learning by a student with Asperger syndrome. The research problem consists of three questions: (1) What are the mediations designed by a teacher of Mathematics for students with Asperger syndrome involved in plane geometry activities in an SML? (2) What mediator actions emerge in collective geometrical learning activities when a student with Asperger syndrome is involved? (3) What arguments are used by a student with Asperger syndrome in solving plane geometry problems? This study takes a qualitative approach and the method used was that of a case study of observation. The procedures and methodological resources adopted in the research involved learning workshop records drawn up with the subject of the research, interviews, dialogues, record and documentary analyses. The underlying theoretical assumptions were based on the Cultural-Historical Theory. The results show evolution in the process of argumentation and in solving mathematical activities on the part of the student. This denotes better manipulation of mathematical signs and also the acquisition of scientific concepts. Mediations and social interactions between students and the teacher were crucial to the development and learning of geometrical concepts with greater meaning for the student with Asperger syndrome. As an educational product of this research, a CD was designed containing the script of all the workshops held in the SML, the planning, reasons and needs which led to its application.
Pensar a educação como um processo de formação humana, a partir das relações sociais, culturais, históricas, em um contexto inclusivo, é um desafio para professores e pesquisadores em todas as áreas conhecimento. Nesse sentido, esta pesquisa busca contribuir para o processo de educação inclusiva em relação à Educação Matemática de alunos com o Espectro Autista. O presente estudo objetivou analisar o significado dado ao objeto de estudo geométrico por um aluno com Síndrome de Asperger, a partir da aplicação de uma proposta pedagógica que valorize o desenvolvimento de atividades no Laboratório de Matemática Escolar (LME). O objeto da pesquisa é: As mediações desenvolvidas no LME e seus impactos no processo de argumentação e aprendizagem geométrico por um aluno com Síndrome de Asperger. A problemática dessa investigação é composta por três perguntas: (1) Quais são as mediações desenvolvidas por um professor de Matemática para aluno com Síndrome de Asperger, quando envolvido em atividades de geometria plana em um LME? (2) Quais são os atos mediadores que emergem em atividades coletivas de aprendizagem geométrica quando um aluno com Síndrome de Asperger nela está envolvido? (3) Quais são os argumentos utilizados por aluno com Síndrome de Asperger no desenvolvimento de problemas de geometria plana? A abordagem investigativa foi a qualitativa e o método em uso foi o estudo de caso de observação. Os procedimentos e recursos metodológicos, adotados na pesquisa, envolveram registros de oficinas de aprendizagem desenvolvidas com o sujeito da investigação, entrevistas, diálogos, registros e análise documental. Os pressupostos teóricos que a nortearam estiveram fundamentados na Teoria Histórico-Cultural. Os resultados apresentam uma evolução no processo de argumentação e resolução de atividades matemáticas por parte do estudante, o que denota uma melhor manipulação dos signos matemáticos e também a aquisição de conceitos científicos. As mediações e as interações sociais entre os alunos e o professor foram fundamentais para o desenvolvimento e para a aprendizagem de conceitos geométricos com maior significado por um aluno com Síndrome de Asperger. Como produto educacional desta pesquisa, elaboramos um CD, contendo um roteiro de todas as oficinas realizadas no LME, com o planejamento, os motivos e as necessidades que levaram à sua aplicação.
APA, Harvard, Vancouver, ISO, and other styles
41

Härlin, Elisabeth. "Matematisk kommunikation : i förskolebarns bygglek." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-8938.

Full text
Abstract:
Jag har undersökt vilken matematisk kommunikation som förekommer i förskolebarnets bygglek. Jag valde metoden videoinspelning där jag observerade fem olika bygglekssituationer som jag sedan tolkade och analyserade. För att få en större förståelse kring byggmiljön ställde jag också några frågor till pedagoger som ansvarade för konstruktionsverkstaden. Resultatet visade att det konkreta materialet förstärkte översättningsledet från det barnet redan kan (första ordningens språk) till det barnet ännu inte förstår (andra ordningens språk). Pedagogerna kunde med materialets hjälp göra ett matematiskt begrepp konkretare. Barnen kom i kontakt med många olika matematiska begrepp, både jämförelseord, lägesord och ordningstal. Det visade sig att vissa barn inte alla gånger använde rätt terminologi, men barnen hade ändå en gemensam förståelse för varandra. Pedagogerna utmanade, förde dialog och såg till att byggmaterialet var inspirerande, tillgängligt och välsorterat.
I have examined what type of mathematical communication is used by children in their constructional play. I used video recording as a method, and observed five different situations that I later interpreted and analyzed. To get a better understanding of the environment of construction I raised some questions to the teachers responsible for the construction work shop. The result showed that the concrete material enforced the translational link from what the child already knows (language of the first order) to what the child not yet understands (language of the second order). The teachers could use the material to make mathematical concepts more concrete. The children where introduced to many different mathematical concepts, both comparative words, words of position, and ordinal numbers. It turned out that some children where not always using the right terminology, but the children still had a common understanding of each other. The teachers challenged, conducted dialogues, and made sure that the building material was inspiring, available, and well sorted.
APA, Harvard, Vancouver, ISO, and other styles
42

Santacruz, Reyes Karla. "Geosynthetic Reinforced Soil: Numerical and Mathematical Analysis of Laboratory Triaxial Compression Tests." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/84428.

Full text
Abstract:
Geosynthetic reinforced soil (GRS) is a soil improvement technology in which closely spaced horizontal layers of geosynthetic are embedded in a soil mass to provide lateral support and increase strength. GRS is popular due to a relatively new application for bridge support, as well as long-standing application in mechanically stabilized earth walls. Several different GRS design methods have been used, and some are application-specific and not based on fundamental principles of mechanics. Because consensus regarding fundamental behavior of GRS is lacking, numerical and mathematical analyses were performed for laboratory tests obtained from the published literature of GRS under triaxial compression in consolidated-drained conditions. A three-dimensional numerical model was developed using FLAC3D. An existing constitutive model for the soil component was modified to incorporate confining pressure dependency of friction angle and dilation parameters, while retaining the constitutive model's ability to represent nonlinear stress-strain response and plastic yield. Procedures to obtain the parameter values from drained triaxial compression tests on soil specimens were developed. A method to estimate the parameter values from particle size distribution and relative compaction was also developed. The geosynthetic reinforcement was represented by two-dimensional orthotropic elements with soil-geosynthetic interfaces on each side. Comparisons between the numerical analyses and laboratory tests exhibited good agreement for strains from zero to 3% for tests with 1 to 3 layers of reinforcement. As failure is approached at larger strains, agreement was good for specimens that had 1 or 2 layers of reinforcement and soil friction angle less than 40 degrees. For other conditions, the numerical model experienced convergence problems that could not be overcome by mesh refinement or reducing the applied loading rate; however, it appears that, if convergence problems can be solved, the numerical model may provide a mechanics-based representation of GRS behavior, at least for triaxial test conditions. Three mathematical theories of GRS failure available in published literature were applied to the laboratory triaxial tests. Comparisons between the theories and the tests results demonstrated that all three theories have important limitations. These numerical and mathematical evaluations of laboratory GRS tests provided a basis for recommending further research.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
43

Brun, Soren Erik. "Sequential scouring, alternating patterns of erosion and deposition, laboratory experiments and mathematical modelling." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0001/NQ35117.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Kiss, Andrew Elek. "Dynamics of laboratory models of the wind-driven ocean circulation." View thesis entry in Australian Digital Theses Program, 2000. http://thesis.anu.edu.au/public/adt-ANU20011018.115707/index.html.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Borglin, Matthew R. "Analysis of Biofilm Remediation Capacity For Octenyl Succinic Anhydride (OSA), A Bioactive Food Starch Modifier Compound." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2168.

Full text
Abstract:
Matthew R. Borglin This thesis demonstrates efficacy of Octenyl Succinic Anhydride (OSA), as a biofilm sanitizer. Biofilms allow bacteria to adhere to solid surfaces with the use of excreted polymeric compounds. For example, surfaces found in food production or processing facilities such as the interior of a raw milk holding tank, are some of the most susceptible to biofilm contamination. When present, biofilms can cause a variety of negative effects, which include; reduction of product shelf life, corrosion, and outbreaks of foodborne illnesses. The close association of biofilms with the majority of foodborne illness cases led the US Environmental Protection Agency (EPA) to create a new category of sanitizer specifically designed for treatment of mature biofilms. The efficacy of sanitizers in this new regulatory category is determined by the EPA protocols MB-19 and MB-20. The EPA’s protocols outline methods for cultivating, treating, and measuring effects on Pseudomonas aeruginosa biofilms in a continuous flow stir bar bioreactor. Biofilm modification by OSA was verified by the presence of octenyl esters on OSA treated biofilms with single point Raman spectrophotometry. OSA modified biofilm’s antimicrobial properties were first investigated with crystal violet staining in 96-well microtiter plates with inconclusive results. However, effective antimicrobial properties where apparent when using the CDC Biofilm Reactor. OSA treatments consistently returned a 6-log CFU/coupon reduction in biomass compared to controls. Inhibition of planktonic and/or biofilm regrowth was demonstrated using the 96-well plate methodology. This thesis demonstrated the effectiveness of OSA chemical esterification reaction as a biofilm treatment. In doing so, this work suggests a new approach for biofilm remediation by chemically modifying the structural components of biofilm.
APA, Harvard, Vancouver, ISO, and other styles
46

Wells, Judith R. (Judith Roberta). "A laboratory study of localized boundary mixing in a rotating stratified fluid." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/58062.

Full text
Abstract:
Thesis (Ph. D.)--Joint Program in Physical Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, and the Woods Hole Oceanographic Institution), 2003.
Includes bibliographical references (p. 145-148).
Oceanic observations indicate that abyssal mixing is localized in regions of rough topography. How locally mixed fluid interacts with the ambient fluid is an open question. Laboratory experiments explore the interaction of mechanically induced boundary mixing and an interior body of linearly stratified rotating fluid. Turbulence is generated by a vertically oscillating horizontal bar, located at middepth along the tank wall. The turbulence forms a region of mixed fluid which quickly reaches a steady state height and collapses into the interior. The mixed layer thickness ... is independent of the Coriolis frequency f. N is the buoyancy frequency, co is the bar frequency, and the constant, Y=1 cm, is empirically determined by bar mechanics. In initial experiments, the bar is exposed on three sides. Mixed fluid intrudes directly into the interior as a radial front of uniform height, rather than as a boundary current. Mixed fluid volume grows linearly with time ... The circulation patterns suggest a model of unmixed fluid being laterally entrained with velocity, e Nhm, into the sides of a turbulent zone with height hm and width Lf ... where Lf is an equilibrium scale associated with rotational control of bar-generated turbulence. In accord with the model, outflux is constant, independent of stratification and restricted by rotation ... Later experiments investigate the role of lateral entrainment by confining the sides of the mixing bar between two walls, forming a channel open to the basin at one end. A small percentage of exported fluid enters a boundary current, but the bulk forms a cyclonic circulation in front of the bar. As the recirculation region expands to fill the channel, it restricts horizontal entrainment into the turbulent zone. The flux of mixed fluid decays with time.
(cont.) ... The production of mixed fluid depends on the size of the mixing zone as well as on the balance between turbulence, rotation and stratification. As horizontal entrainment is shut down, longterm production of mixed fluid may be determined through much weaker vertical entrainment. Ultimately, the export of mixed fluid from the channel is restricted to the weak boundary current.
by Judith R. Wells.
Ph.D.
APA, Harvard, Vancouver, ISO, and other styles
47

Trevethan, Thomas J. "Building Cloud-Based Information Systems Lab Architecture: Deriving Design Principles that Facilitate the Effective Construction and Evaluation of a Cloud-Based Lab Environment." NSUWorks, 2015. http://nsuworks.nova.edu/gscis_etd/56.

Full text
Abstract:
The problem explored in this dissertation report was that at the time of this study, there were no design principles or methodologies based on design science research (DSR) available to use for artifact construction, implementation, and effective evaluation of cloud-based networking lab environments that can be used to foster hands-on technology skills in students. Primarily based on Hevner’s 7 guidelines of DSR, Peffer’s design science research methodology (DSRM), and Gregor’s IS design theory, this study forms the groundwork for the development of procedures and specifications derived from DSR literature to facilitate the construction, implementation, and evaluation of a comprehensive cloud-based computer and information systems (CIS) laboratory artifact that is globally accessible 24 hours a day and 7 days a week. Secondarily, this study guided the construction and implementation of a prototype cloud-based lab environment using the procedures and specifications derived from DSR. The cloud-based lab environment was then evaluated based on the skill level attained by students enrolled in courses that leveraged the proposed system. Results of this study showed that the overwhelming majority of the students who participated in the experiment using the cloud-based lab environment showed statistically significant gains in pretest and posttest scores compared to the students who participated in the experiment using the classroom-based physical equipment. These results fully supported the first hypothesis for this study, that participation in the cloud-based lab environment would promote positive student outcomes. The second hypothesis also was supported. The majority of the experimental group students completed most of the labs and significantly spent more time on the system compared to the control group students using the traditional classroom-based physical lab equipment, which indicated the specifications derived from DSR positively influenced the use of the cloud-based system. An argument was made that the proposed study advances IS and education research through artifact construction and evaluation by correlating Hevner’s 7 steps of effective DSR theory, Peffer’s DSRM, and Gregor’s IS design theory to the problem statement, research questions, and hypothesis in order to develop guiding principles and specifications for building and assessing a cloud-based lab environment.
APA, Harvard, Vancouver, ISO, and other styles
48

McClure, Bruce Alexander Carleton University Dissertation Engineering Mechanical and Aerospace. "The TEther LABoratory demonstration system (TE-LAB); design, operation and mathematical model validation using an eigenvalue approach." Ottawa, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
49

Naiser, Dominik. "Experimentální stanovení hydrodynamického zatížení modelu přelévané mostovky." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409718.

Full text
Abstract:
The diploma thesis deals with experimental determination of hydrodynamic load on the overflowed bridge deck model. In the first part of the thesis the author describes the analysis of the problem together with the basic physical laws and principles that are used or assumed in the measurement itself. In the second part the author describes the measurements in the laboratory of the Faculty of Civil Engineering and its gradual processing. At the end of the work are described the results of measurement, their comparison with numerical modeling, other authors and their possible use in practice.
APA, Harvard, Vancouver, ISO, and other styles
50

Letelier, Villalón Juvenal Antonio. "Fluid Dynamics of heat and mass transport in porous media. Mathematical modelling, spectrally-based direct numerical simulations and laboratory experiments." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/140206.

Full text
Abstract:
Doctor en Ciencias de la Ingeniería, Mención Fluidodinámica
En este trabajo se presenta el problema del transporte de calor y masa para un sistema compuesto de dos fases fluidas en un medio poroso, el cual puede ser relevante en el uso de CO2 como fluido de trabajo en reservorios geotermales. El medio poroso fue modelado usando una celda Hele-Shaw, la cual es ampliamente usada para la visualización del transporte de escalares. Los objetivos de este trabajo son (a) investigar teórica y numéricamente las leyes de escalamiento que gobiernan los procesos de mezcla en un medio poroso, y (b) visualizar los procesos de transporte usando celdas Hele-Shaw y avanzadas técnicas de segmentación de imágenes. El modelo derivado es una extensión de la ecuación de Polubarinova-Kochina, la cual es válida para regímenes de flujos altos en medios porosos. El transporte de calor y masa en un medio poroso es gobernado por el número de Nusselt Nu' y la tasa de disipación media escalar h"'i_ = `mix/L , donde `mix es la longitud de mezcla y L es la longitud horizontal de la celda . La principal contribución de este trabajo es la demostración de la existencia de los escalamientos hNu'i_ _ Ran(_) ' y h"'i_ _ Ram(_) ' , respectivamente, donde Ra' es el número de Rayleigh sujeto a la definición del escalar ' , el cual puede ser temperatura o concentración, y _ es el cociente entre el espaciamiento de la celda y su altura. Ambas cantidades se relacionan a través del modelo hNu'i_ = _(_2Ra', _)Ra' h"'i_ , donde _ contiene información de los efectos de difusión lateral de mezcla. Esta contribución extiende los resultados más recientes publicados en la literatura. Dada la importancia del parámetro adimensional _ en la escala de laboratorio, se realizó un detallado análisis lineal de la convección termal y la inestabilidad de Rayleigh-Taylor, incorporando efectos de tensión interfacial ya que el CO2 es un fluido parcialmente miscible con el agua. Los resultados obtenidos usando métodos asintóticos corrigen los análisis descritos en la literatura, así como también entregan nuevas evidencias de que el inicio de la inestabilidad de Rayleigh-Taylor depende completamente de los efectos interfaciales de la mezcla. Finalmente, para visualizar el transporte escalar, se realizaron experimentos de convección termal y mezcla por contraste de densidad. Se usaron técnicas de atenuación de luz y Schlieren sintético, además de métodos de segmentación de imágenes basados en principios variacionales, los cuales permitieron obtener interesantes resultados visuales del proceso de transporte. Se demostró que la aplicación del método optical flow permite reconstruir el mapa de temperaturas en celdas Hele-Shaw con una mejor resolución de imagen que el algoritmo PIV digital, obteniendo resultados acordes a lo esperando en sistemas geotermales sedimentarios. Además, se muestra experimentalmente que el uso de segmentación multifase es ideal para calcular propiedades físicas del proceso de mezcla, además de cantidades relacionadas con el transporte escalar, sin conocer a priori los valores de cantidades físicas tales como la densidad y velocidad de flujo
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography