A questão da argumentação e prova na matemática escolar: o caso da medida da soma dos ângulos internos de um quadrilátero qualquer

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This study is placed in the context of teaching and learning of mathematical proofs and arguments by students of middle school, developed under the Project Reasoning and Proof in School Mathematics (AProvaME). The aim of the work refers to map the concepts of argumentation and proofs of adolescent students aged between 14 and 16 years of public and private schools of the State of Sao Paulo. For this survey was drawn up a questionnaire in two books, five questions of Algebra and five of Geometry, applied to 1.998 students. More specifically, this work focused on reviewing a matter of Geometry (G3), which called for the truth or falsity of a statement and presenting a justification for the answer. The preparation and discussion of the responses were based largely on research Balacheff (1988) and Healy &Hoyles (1998), on empirical and formal arguments and the complex shift from production of evidence for conceptual pragmatic. After tabulating the information gathered, seeking a more detailed analysis of those 1.998 protocols, drew to a smaller sample of 50 of them. In the next stage, the students were grouped according to types of the presented responses for being submitted to a few individual interviews, in order to obtain additional information about their answers. The work was finished with a conclusive and reflective picture based on the results of previous tests, in which more than 50% of the surveyed students rated the statement of the issue (G3) as true, and for reasons, the preference for empirical arguments (checks for some cases) stood out, but they also had a considerable amount of dont know" and others left empty, with few to justify their answers with the use of properties, for example, the addition of internal angles of any triangle

ASSUNTO(S)

matematica mathematics education test and demonstration arguments argumentação matematica (elementar) -- estudo e ensino aprovame (projeto) prova e demonstração educação matemática quadrilateral quadrilátero

ACESSO AO ARTIGO

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