Miyakawa, TakeshiTakeshiMiyakawaClivaz, StéphaneStéphaneClivazRezat, S.Fan, L.Hattermann, M.Schumacher, J.Wuschke, H.2020-07-242020-07-242019http://hdl.handle.net/20.500.12162/4018This paper investigates the resources the student-teachers used to design and implement grade 4 mathematics lessons in the context of a project-based international exchange programme between Switzerland and Japan. The lesson, initially planned together by nine student-teachers of the two countries, was implemented separately in each country. In spite of the collaborative design of a lesson, its enactment was quite different. The analysis of the resources (namely lesson plan, curricula, and textbooks) allows us to identify the elements that yield the differences between the two lessons.enDidactique des mathématiquesLesson StudyType de référence::Communications::Communication scientifique publiée10.17619/UNIPB/1-768