Instrumentos virtuais de desenho e a argumentação em geometria

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

2012

RESUMO

This dissertation presents a proposal to work, at school, the deductive reasoning in geometry. The proposal makes use of digital material consisting of virtual drawing tools that perform geometric transformations of translation, reflection, rotation and enlargement. Making use of digital material, it was developed a didactic sequence consists of three stages - exploration, construction and argumentation, and an experiment was performed in a high school class. In the analysis of the learning process of the students it was used the theory of Van Hiele related to levels of geometric thought and the theory of Duval related to registers of semiotic representations. In the computer lab, initially the students were encouraged to explore the virtual instruments, expressing their understanding in a discursive register; they made the geometric construction of the instruments, making use of discursive and geometric registers; finally they worked on the argument that explains the transformations performed by the instruments. The results show that the use of virtual instruments helped students to understand, in the geometric context, the purpose of a deductive reasoning.

ASSUNTO(S)

ensino-aprendizagem argumentation geometria geometry ensino médio dynamic geometry geometria dinâmica virtual instruments registers of semiotic representations

ACESSO AO ARTIGO

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