Batteau, ValérieValérieBatteau2018-10-112018-04-302018-10-112017http://hdl.handle.net/20.500.12162/704This study presents the analysis of primary school teacher’s practices in mathematics for a lesson that has taken place after a professional development training called lesson study (LS) in Lausanne, Switzerland. Practices are analysed in a double didactical and ergonomical approach. The methodology used is a case study of the particular teacher’s practices. Results about the teacher’s practices after the LS process are discussed.enDidactique des mathématiquesType de référence::Communications::Communication scientifique non publiée::Communication orale