SEEING -ACTING - SPEAKING IN GEOMETRY: A CASE STUDY
Résumé
The purpose of this paper is to describe and analyse the confrontation and changing processes of frequentation modes (seeing - acting - speaking) of 1st grade secondary school students (10-11 years old) during two geometric construction tasks. This work is based on a logic analysis of the mathematical concepts involved: the midpoint of a line segment and the circle.
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