L’articulation des systèmes didactiques dans la construction de la référence en classe. Le cas de l’enseignement de l’éducation physique, en coresponsabilité et en alternance, à l’école primaire genevoise

The didactical systems are usually under the responsibility of one teaching body. In the primary school system of Geneva two teachers are alternately co-responsible of teaching physical education: a specialist teacher (MS) and a general teacher (MG). In our research we decided to study, from a descriptive point of view that takes into account the ordinary practices, how teachers with different institutional duties, (for instance initial training, function in the school) organize their work to create a didactical history of the class. We try to understand the effects of this joint work on the reference built together in class by the teacher and the students. Furthermore, we aim to understand how the take-over between the MS and the MG speeds up the didactical time.