Detalhes bibliográficos
| Ano de defesa: |
2007 |
| Autor(a) principal: |
Duarte, Valdenir Francisco
 |
| Orientador(a): |
Bongiovanni, Vincenzo |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Pontifícia Universidade Católica de São Paulo
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| Programa de Pós-Graduação: |
Programa de Estudos Pós-Graduados em Educação Matemática
|
| Departamento: |
Educação
|
| País: |
BR
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
https://tede2.pucsp.br/handle/handle/11287
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Resumo: |
This work, carried out as part of the research project AprovaME developed at the Pontifical Catholic University of São Paulo, has as its aim to verify the advances and the difficulties presented by students in the elaboration of proofs related to the properties of parallelograms. The research procedures adopted during the study drew from the theories of de Parzysz (2001) concerning formal and empirical proofs; the four dimensions involved in the construction of geometrical thinking perception, representations, construction and conception presented by Machado (1995); the representation of information from the point of view of Duval (1995); and the considerations related to logical sequences in Duval e Egret (1989). Using the methodology Didactical Engineering, a sequence of activities was designed and carried out with two groups of students. One group was composed of 8th grade Middle School students and the second of students from the first year of High School. The activity sequence was planned to involve students in, first, the construction of hypotheses and theses on the basis of empirical explorations and, in term, organise, in a deductive form, their propositions in order to elaborate proofs of various properties of parallelograms. The analysis of the students productions illustrates difficulties experienced in the process of argumentation and proof that can be grouped into three categories: difficulties related to the elaboration of proofs, difficulties associated with the acceptance of empirical arguments and difficulties linked to problems in interpreting the problems proposed. The analysis also suggested that as the activity sequence progressed, certain advances in relation to these difficulties occurred. Some students began to carry out calculations without needing to consider particular cases, others presented complete formal proofs and even those who produced incomplete proofs made use of logical reasoning in attempts to express valid arguments. In addition, a positive factor related to the activity sequence was the engagement of students in the analysis of proofs constructed by others |
