Activités gémétriques en formation d´enseignants de mathématiques au lycée - une étude de cas à l´école normale supérieure de Bamako - Geometric Activities in the Formation of Mathematics High School Teachers

This article presents some results obtained halfway in the realization of a research project for the training of high school math teachers graduating from Ecole Normale Superieure (High school professors training college) in Bamako. Our interest is on the conception and implementation of training mechanisms in geometry The main objective is to do a reflexive study on the construction and the challenging of some types of activities in plane euclidian geometry proposed since the beginning the previous school year (2013-2014). Two training activities were proposed to some student teachers majoring in maths specializing in plane euclidian geometry with the aim to find out key factors that could prove their effectiveness in teachers training.