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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Um estudo exploratório sobre a formação conceitual em geometria de alunos do ensino médio

Proença, Marcelo Carlos de [UNESP] 27 February 2008 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:24:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-27Bitstream added on 2014-06-13T20:32:18Z : No. of bitstreams: 1 proenca_mc_me_bauru.pdf: 1462830 bytes, checksum: 518c15b861d67ff8aa5024e7c4385c2f (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo da pesquisa foi analisar o conhecimento declarativo de alunos do ensino médio sobre polígnos e poliedros em termos de seus atributos difinidores, das relações subordinadas e supra-ordenadas e de seus exemplos e não-exemplos. A concepção teórica utilizada foi o modelo de formação de conceitos de Klausmeier e Goodwin (1977). Os participantes foram 253 alunos do ensino de uma escola de rede oficial pública de ensino de Bauru, que responderam, na primeira fase, um questionário, uma prova matemática, um testes de atributos definidores, um teste de exemplos e não-exemplos e um teste de relações subordinadas e supra-ordenadas. Na segunda fase, foram selecionados, aleatoriamente, três alunos com média abaixo de cinco pontos e três alunos com média igual ou superior a cinco pontos para participarem de uma entrevista. Os resultados coletados na primeira fase, analisados quantitativamente, mostram que no teste de atributos definidores a nota média foi de 6,03, sendo que não houve diferença significativa entre as séries (p=0,084). No teste de exemplos e não-exemplos a nota média 5,59 refletiu o desempenho dos participantes e não foram encontradas diferenças significativas entre as séries (p=0,057). Em relação ao teste de relações subordinadas e supra-ordenadas a nota média dos participantes foi 5,64, sendo que a nota média obtida pela primeira série diferiu significativamente da nota média obtida pela terceira série (p=0,024). Em relação aos dados da segunda fase, analisados qualitativamente, alguns participantes pensavam, de maneira equivocada, sobre os atributos definidores de polígnos e de poliedros. Os atributos irrelevantes não interferiam na identificação das figuras selecionadas do teste de exemplos e não-exemplos como exemplos polígnos. / The objective of this reseach was to analyse the declarative konowledge of students from Elementary School Teaching about polygons and polyhedrons in terms of their defining atributes, the subordinate relations and supraordinate and their examples and no-exemples. The theoretical conception used was the model of formation from Klausmeier and Goodwin (1977)'s concepts. The participants were 253 students from Elementary School Teaching of one school of the Oficial Public Network from Bauru, who answered, in the first phase one questionnaire, one math test, one test of defining attributes, one test of examples and no-examples and one test of subordinate relations and supraordinate. In the second phase, three students were randomly selected with the average below five points and three students with equal average or higher to five points who participated in an interview. The collected results in the first phase, quantitatively analysed, showed that in the test of defining attributes, the average grade was 6,03, so there was no significative difference among the series (p=0,084). In the test of examples and no-examples the average grade 5,59 reflected the performance of the participants and no significative differences were found among the series (p=0,057). In the relation to the test of subordinate relations ans supraordinate the average grade of the participants was 5,64, so the average obtained by the first grade had no significative difference from the average obtained by the third grade (p=0,024). In relation to the data of the second phase, qualitativety analysed, some participants thought wrongly about the defining attributes of polygons and polyhedrons. The irrelevants attributes did not interfere in the identification of the selected pictures of the test of examples and no-examples as polygons examples.
2

Um estudo exploratório sobre a formação conceitual em geometria de alunos do ensino médio /

Proença, Marcelo Carlos de. January 2008 (has links)
Orientador: Nelson Antonio Pirola / Banca: Odalea aparecida Viana / Banca: Regina Maria Pavanello / Resumo: O objetivo da pesquisa foi analisar o conhecimento declarativo de alunos do ensino médio sobre polígnos e poliedros em termos de seus atributos difinidores, das relações subordinadas e supra-ordenadas e de seus exemplos e não-exemplos. A concepção teórica utilizada foi o modelo de formação de conceitos de Klausmeier e Goodwin (1977). Os participantes foram 253 alunos do ensino de uma escola de rede oficial pública de ensino de Bauru, que responderam, na primeira fase, um questionário, uma prova matemática, um testes de atributos definidores, um teste de exemplos e não-exemplos e um teste de relações subordinadas e supra-ordenadas. Na segunda fase, foram selecionados, aleatoriamente, três alunos com média abaixo de cinco pontos e três alunos com média igual ou superior a cinco pontos para participarem de uma entrevista. Os resultados coletados na primeira fase, analisados quantitativamente, mostram que no teste de atributos definidores a nota média foi de 6,03, sendo que não houve diferença significativa entre as séries (p=0,084). No teste de exemplos e não-exemplos a nota média 5,59 refletiu o desempenho dos participantes e não foram encontradas diferenças significativas entre as séries (p=0,057). Em relação ao teste de relações subordinadas e supra-ordenadas a nota média dos participantes foi 5,64, sendo que a nota média obtida pela primeira série diferiu significativamente da nota média obtida pela terceira série (p=0,024). Em relação aos dados da segunda fase, analisados qualitativamente, alguns participantes pensavam, de maneira equivocada, sobre os atributos definidores de polígnos e de poliedros. Os atributos irrelevantes não interferiam na identificação das figuras selecionadas do teste de exemplos e não-exemplos como exemplos polígnos. / Abstract: The objective of this reseach was to analyse the declarative konowledge of students from Elementary School Teaching about polygons and polyhedrons in terms of their defining atributes, the subordinate relations and supraordinate and their examples and no-exemples. The theoretical conception used was the model of formation from Klausmeier and Goodwin (1977)'s concepts. The participants were 253 students from Elementary School Teaching of one school of the Oficial Public Network from Bauru, who answered, in the first phase one questionnaire, one math test, one test of defining attributes, one test of examples and no-examples and one test of subordinate relations and supraordinate. In the second phase, three students were randomly selected with the average below five points and three students with equal average or higher to five points who participated in an interview. The collected results in the first phase, quantitatively analysed, showed that in the test of defining attributes, the average grade was 6,03, so there was no significative difference among the series (p=0,084). In the test of examples and no-examples the average grade 5,59 reflected the performance of the participants and no significative differences were found among the series (p=0,057). In the relation to the test of subordinate relations ans supraordinate the average grade of the participants was 5,64, so the average obtained by the first grade had no significative difference from the average obtained by the third grade (p=0,024). In relation to the data of the second phase, qualitativety analysed, some participants thought wrongly about the defining attributes of polygons and polyhedrons. The irrelevants attributes did not interfere in the identification of the selected pictures of the test of examples and no-examples as polygons examples. / Mestre
3

Abstrakta begrepp i NO-salen : En trestegsmodell för ökad begreppsförståelse i naturorienterande ämnen

Demirovic, Azra, Erander, Caroline January 2024 (has links)
Swedish students in grades 4 and 8 have maintained a consistent performance in natural science based on the TIMSS assessments conducted in 2019 and 2015. However, results from the Swedish School Inspectorate suggest a low level of interest among students in the subject of natural science. Students have expressed difficulty in understanding natural science subjects due to teachers frequently discussing abstract phenomena that are challenging to observe or visualize clearly. Despite memorizing information to meet subject objectives, pupils often lack a deeper comprehension of these scientific phenomena, resulting in a diminished interest in the subject. This litterary overwiev aims to address the question: What factors and methods are conducive to enhancing middle school pupils' conceptual understanding in natural science subjects? Eight diverse studies focused on students' conceptual understanding, or lack thereof, in natural science were analyzed. The outcomes highlighted three themes with a positive impact on pupils' conceptual understanding: the nature of the subject matter, teacher-related factors, and aspects of instructional content such as teaching methods. This study identifies methods and pedagogical choices that educators can utilize to improve pupils' conceptual understanding in a three step solution. Further discussion explores potential discrepancies between the new Swedish curriculum and such instructional approaches, questioning the coexistence of pupils' interest and knowledge in elementary science education.
4

A d?ade saberes e pr?ticas docentes : um estudo de suas inter-rela??es / A d?ade saberes e pr?ticas docentes : um estudo de suas inter-rela??es

Sousa, Ana Teresa Silva 16 August 2011 (has links)
Made available in DSpace on 2014-12-17T14:36:23Z (GMT). No. of bitstreams: 1 AnaTSS_TESE.pdf: 3401523 bytes, checksum: 93f615dc11810e50b602af6233df1e27 (MD5) Previous issue date: 2011-08-16 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study The Dyad of knowledge and teaching practices: an inter-relational study deals with the relationship between conceptual knowledge on behalf of the teachers and their teaching practices. The research aims to investigate the relations amongst conceptual meanings related to the professor and the practices of three (03) Fundamental Cycle public schools teachers in Natal-Brazil. Thus, a collaborative research of qualitative nature was performed by us. It was based on collaboration and critical reflection, as well as the socialhistorical theoretical methodological principles of Ferreira (2009). This was acknowledged as an analytical support for the reflections that were realized on concepts related to teachers and teaching considering the archeology on these concepts. The methodological procedures and tools we used consisted of Formative Autobiographies, Reflexive Study, Collaborative Observation, as well as some Reflexive Sessions. The analysis framework was based on information obtained by these methodological procedures as well as the critical collaborative and reflexive procedures. The studies permitted us to widen our knowledge related to the conceptual meaning of teaching and teachers. But it was not always possible for us to (re)elaborate these meanings in the conceptual phase. This was only possible to understand once our Formative Autobiographies were analyzed. They reveal that the concept elaboration process is not a part of our own formative path. The time that was dedicated to that proved to not be enough. The concept elaboration process demands time, effort as well as life-long learning skills. This is not always possible to achieve in this part of the study, on the other hand, this was possible to acknowledge that in the different stages of our conceptual elaboration. The teaching practices that we analyzed were predominantly heterogeneous and were fundamented on meanings of concepts related to teachers and teaching, that were internalized beforehand, (re)elaborated according to the conflicted and contradictory situations. The reflexive and collaborative process that we experimented during the Reflexive Sessions pointed out the predominance of technical and practical reflection process. In some moments it was possible for us to critically reflect on teaching practices due to the collaborative mode that we experienced. The importance of collaboration for teaching formation and professional development of behalf of teachers in general is pointed out by this research. Also regarding this research it was possible to see that there was personal and professional growth, experiencing learning together to collaborative reflect, as well as to counter-argument, reformulate concepts and conceptions aiming to transform our teaching practice / O estudo que apresentamos, intitulado A d?ade saberes e pr?ticas docentes: um estudo de suas inter-rela??es, trata da rela??o entre os saberes conceituais de professor e doc?ncia e as pr?ticas docentes. Teve como objetivo investigar a rela??o entre os significados conceituais relativos a professor e doc?ncia e a pr?tica docente de tr?s (03) professoras do Ensino Fundamental que atuam em escolas p?blicas da cidade do Natal. Realizamos uma pesquisa colaborativa, de natureza qualitativa, com foco na colabora??o e reflex?o cr?tica, tendo os princ?pios da teoria s?cio-hist?rica e a metodologia conceitual de Ferreira (2009) como suporte anal?tico para as reflex?es que realizamos sobre os conceitos de professor e doc?ncia, assim como sobre a arqueologia desses conceitos. Fizemos uso dos seguintes procedimentos metodol?gicos: Autobiografias de Forma??o, Ciclos de Estudos Reflexivos, Observa??o Colaborativa e Sess?es Reflexivas. O corpus de an?lise se constituiu das informa??es obtidas por meio desses procedimentos metodol?gicos, acrescidos do processo colaborativo reflexivo e cr?tico. Os estudos que realizamos permitiram ampliar nosso conhecimento relativo ao significado conceitual de professor e de doc?ncia, por?m nem todas n?s conseguimos (re)elaborar esses significados no est?gio conceitual, fato compreens?vel se voltarmos o olhar para as nossas Autobiografias de Forma??o, as quais revelaram que o processo de elaborar conceitos n?o fez parte do nosso percurso formativo. Os momentos dedicados para tal finalidade n?o foram suficientes porque esse processo de elabora??o de conceitos demanda tempo e um longo aprendizado, nem sempre atingido de uma s? etapa de estudo, fato comprovado nos est?gios diferenciados de nossas elabora??es conceituais. As pr?ticas docentes que analisamos caracterizaram-se como predominantemente heterog?neas, fundamentadas ora nos significados dos conceitos de professor e de doc?ncia, internalizados anteriormente, ora nos (re)elaborados, determinando muitas vezes situa??es conflituosas e contradit?rias. Quanto ao processo reflexivo colaborativo vivenciado por n?s durante as Sess?es Reflexivas, a predomin?ncia foi da reflex?o t?cnica e pr?tica, mas em alguns momentos refletimos criticamente sobre as pr?ticas docentes, gra?as ? instaura??o do processo de colabora??o por n?s vivenciado. Destacamos a import?ncia que tem a pesquisa colaborativa para forma??o e desenvolvimento profissional de professores de modo geral. No caso desta pesquisa, crescemos como profissionais e enquanto pessoas, aprendendo juntas a refletir colaborativamente, argumentar, contra-argumentar, reformular concep??es e conceitos, objetivando a transforma??o de nossa pr?tica docente
5

A educação ambiental crítica e a formação humana: a tomada de consciência e a elaboração conceitual na formação de educadores ambientais / Critical environmental education and human formation: the awareness and the conceptual elaboration in the formation of environmental educators

Costa, Lorenna Silva Oliveira 14 November 2017 (has links)
Submitted by Franciele Moreira (francielemoreyra@gmail.com) on 2017-12-19T15:06:07Z No. of bitstreams: 2 Tese - Lorenna Silva Oliveira Costa - 2017.pdf: 3777629 bytes, checksum: e7c39c3dc0f9f9d214adab51bad17a79 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-12-21T12:30:50Z (GMT) No. of bitstreams: 2 Tese - Lorenna Silva Oliveira Costa - 2017.pdf: 3777629 bytes, checksum: e7c39c3dc0f9f9d214adab51bad17a79 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-12-21T12:30:50Z (GMT). No. of bitstreams: 2 Tese - Lorenna Silva Oliveira Costa - 2017.pdf: 3777629 bytes, checksum: e7c39c3dc0f9f9d214adab51bad17a79 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-11-14 / Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG / The understanding of the learning processes foundations of environmental concepts in Science teachers‟ initial formation is an important point to take into consideration in the capabilities of Critical Environmental Education (EAC). In this context, the research problem of the present work was: how does the relation between the environmental knowledge appropriation and human formation, in the act of knowing, in a specific educational space occur? We sought to investigate how the teaching of environmental concepts, in a dialectical approach, can contribute to the students‟ awareness and their conceptual elaboration, in a specific context of school education, and, thus, elaborate new understandings of these processes. The methodological and epistemological positions of this research were grounded, mainly, on Historical-Dialectical Materialism and Historical-Cultural Theory. A theoretical study was carried out concerning: 1) the core determinations of the environmental crisis‟s instauration, regarding it as a historical process; 2) the historical and dialectical perspective of the relation between society and nature; 3) the human formation elements, focused on the development of Higher Psychological Functions, in particular the conceptual formation and awareness; and 4) the Environmental Education as a political Education and as an element for human formation aimed at questioning and transforming reality. Along with this study, an empirical research was carried out with students from a Chemistry graduation course in the Center-West region of Brazil, linked to a Chemistry sub-project of the Institutional Program of Teaching Initiation Scholarships (PIBID). The Pedagogical Project of the Course was previously analyzed in order to investigate the possible presence of environmental contents and, through questionnaires, the subjects‟ environmental concepts and the aspects of their experiences were identified. Subsequently, we analyzed the conceptual formation and the evidences of awareness of these subjects over a semester, in a Discussion Group which held 14 meetings. The meetings were filmed, transcribed and analyzed using Micro-genetic Analysis, based on Lev Vygotsky. Through the analyses, four categories, which involve the environmental concepts discussed were elaborated: 1) the view of what environment is; 2) the explanations about the environmental crisis; 3) the motivations and educational instances in the formation of the environmental educator; and 4) the me-other view in the world and the neoliberal rationality. After this elaboration, two indicators of the meaning-sense relation that comprise affective and intellectual elements were identified: 1) affective expressions and; 2) concept generality relations. Such indicators came up, implicitly or explicitly, in the enunciations of all categories. To those indicators were elaborated sub-indicators. It was observed that the concepts most mobilized by students were those constructed in other educational instances such as the church and the media, which reflected little school Education influence. The students presented a fragmented view that did not regard the human being as a form of nature existence. The discussions demonstrated limitations in the relations of their conceptual networks, with little amplitude in the degrees of generality. Since the EAC questioned many meanings that were stable for students, we observed their backlash against some of the concepts /themes, which resulted in the students‟ resistance to learning them. The verbal students‟ interventions were predominantly grounded on a network of spontaneous concepts based on a neoliberal project of society. On the other hand, it was possible to note the importance and formative potentiality of studying time and dialogues prompted to broaden students' conceptual network, denaturalize socio-environmental relations and contribute to the reflection process and appropriation of scientific concepts. / A compreensão de fundamentos dos processos de ensino e aprendizagem de conceitos ambientais na formação inicial de professores de ciências é um ponto relevante para se pensar as potencialidades da Educação Ambiental Crítica (EAC). Nesse contexto, o problema de investigação da presente pesquisa foi: como se dá a relação entre a apropriação dos conhecimentos ambientais e a formação humana, no ato de conhecer, em um espaço educativo específico? Buscou-se investigar como o ensino de conceitos ambientais, numa abordagem dialética, pode contribuir na tomada de consciência e na elaboração conceitual de estudantes, em um contexto específico de educação escolar, e, assim, elaborar novas compreensões desses processos. O Materialismo Histórico-Dialético e a Teoria Histórico-Cultural foram as principais teorias que orientaram as posições metodológicas e epistemológicas desta investigação. Foi realizado um estudo teórico sobre: 1) as determinações fundamentais da instauração da crise ambiental, considerando-a como um processo histórico; 2) a perspectiva histórica e dialética da relação sociedade e natureza; 3) elementos da formação humana, com foco no desenvolvimento das Funções Psicológicas Superiores, em específico a formação de conceitos e a tomada de consciência; e 4) a Educação Ambiental como educação política e como elemento para a formação humana com vistas ao questionamento e à transformação da realidade. Paralelo a esse estudo, realizou-se uma pesquisa empírica desenvolvida com estudantes de um curso de Licenciatura em Química, da região Centro-Oeste do Brasil, vinculados a um subprojeto de Química do Programa Institucional de Bolsa de Iniciação à Docência (PIBID). Analisou-se previamente o Projeto Pedagógico do Curso para identificar a presença ou não de conteúdos ambientais e, por meio de questionários foram identificados conceitos ambientais dos sujeitos e aspectos de suas vivências. Posteriormente, analisou-se o processo de formação conceitual e os indícios de tomada de consciência desses sujeitos ao longo de um semestre em um Grupo de Discussão que realizou 14 encontros. Os encontros foram filmados, transcritos e analisados, utilizando-se a Análise Microgenética fundamentada em Lev Vigotski. Por meio da análise, quatro categorias, que envolvem os o de natureza; 2) as - relação sentido-significado que abarcam elementos afetivos e intelectuais foram identificados: 1) expressões conceitos. Tais indicadores apareceram, implicitamente ou explicitamente, nos enunciados de todas as categorias. Desses indicadores elaborou-se subindicadores. Observou-se que os conceitos mais mobilizados pelos estudantes foram os construídos em outras instâncias educativas, como a igreja e a mídia, havendo pouca influência da educação escolar. Os estudantes apresentaram uma visão fragmentada que não considerou o ser humano como uma forma de existência da natureza. As discussões demonstraram limitações nas relações de suas redes conceituais, com pouca amplitude nos graus de generalidade. Devido à EAC questionar muitas significações estáveis para os estudantes, observou-se o estranhamento de alguns conceitos/temas, gerando resistência em apreendê-los. As intervenções verbais dos estudantes basearam-se, predominantemente, em uma rede de conceitos espontâneos pautada em um projeto neoliberal de sociedade. Por outro lado, observou-se a importância e a potencialidade formativa de momentos de estudo e diálogo sistematizados para ampliar a rede conceitual dos estudantes, desnaturalizar as relações socioambientais e contribuir para o processo de reflexão e apropriação dos conceitos científicos.

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