Visual aids should be used in primary school mathematics lessons to support children in exploring and understanding mathematical structures and relationships. In addition to the function of a methodical calculation aid, visual aids also have the function of an epistemological tool. The ability to use mathematical representations with a "structural view" as exploratory tools does not develop spontaneously in the classroom, but can only be developed interactively between the children and the teacher in a special teaching culture.
The research interest of the working group lies in the challenging requirement for primary school children to use mathematical representations in a range between concretely tangible and abstractly structure-oriented interpretations. In various research projects, the epistemological conditions of learning mathematics with visual aids are examined in an interplay of empirical research and theory development.