The paper describes the development and evaluation of a curriculum unit in which 3rd semester preservice students in pairs developed and tried out a series of IBSE lessons in primary schools. The preservice
students were especially selected for a university-based course whereas until recently all primary teacher education was based in institutions for higher vocational education rather than in
universities. With ample guidance from a science educator, scientist, a cooperating teacher and a school-based teacher educator the students were able to develop and teach successful lessons with IBSE features to elementary students who were not used to IBSE. Future development will be focused on achieving the same results with less manpower and on adapting the IBSE course to a regular nonuniversity teacher education setting