Cabri-géomètre as a mediator in the process of transition to proofs in open geometric situations.

Abstract : In this paper I will present some findings of a teaching experiment on proof. Pupils were requested to produce conjectures in open geometric situations, to validate and, finally, to prove them. These activities took place in the microworld Cabri-Géomètre Our project was aimed to investigate the validity of the Cabri software as a mediator in the process discovering-conjecturing-proving. We found out that different dragging modalities are crucial for producing a shift from conjecturing to proving: these modalities can be analysed as the perceptive counterpart of the cognitive processes students use.
keyword : proving dragging
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Federica Olivero. Cabri-géomètre as a mediator in the process of transition to proofs in open geometric situations.. 4th International Conference on Technology in Mathematics Teaching, 1999, United Kingdom. pp.15. ⟨hal-00190190⟩

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