Analyses de séances en classe et stabilité des pratiques d’enseignants de mathématiques expérimentés du second degré

摘要

In this paper we tackle the issue of an eventual stability of teachers’ activity in the classroom. First we explain what kind of stability is searched and how we look for the chosen characteristics: we analyse the mathematical activity the teacher organises for students during classroom sessions and the way he manages the relationship between students and mathematical tasks. We analyse three one-hour sessions for different groups of 11 year old students on the same content and with the same teacher, and two other sessions for 14 year old and 15 year old students, on analogous contents, with the same teacher (another one). Actually it appears in these two examples that the main stabilities are tied with the precise management of the tasks, at a scale of some minutes, and with some subtle characteristic touches of the teacher’s discourse. We present then a discussion and suggest some inferences of these results.