Abstract: The advantages of interdisciplinary teaching and learning in school have been discussed for some time. However, in order to exploit the full potential of this approach, interdisciplinary teaching and learning must go beyond a mere sequence of special content. This is accompanied by the need for appropriately trained teachers, whose training should follow a holistic approach, especially in the context of their university education. The project “Inter-TeTra” is such an approach and it is expected that the project will contribute to the further development of competences for subject-related teaching. In this paper the basic idea, the planned course of the project and the first studies on the theoretical basis will be outlined. In order to obtain a valid selection of topics from both subject didactics, a comparative content analysis of German, Vietnamese, French and anglophone work on didactics is carried out in the first step. It is expected that such an intersection will contain topics of great sustainability and high educational relevance.
Keywords: Developing country project, Interdisciplinary approach, Physics-mathematics relationship, Teacher training curriculum development.