Under the title "FUM – Long-term Competence-oriented Support for Non-specialist Mathematics Teachers", concrete support materials for lesson design and diagnostics of pupils' learning status in the subject of Mathematics in the double grades 5/6 and 7/8 for secondary schools for non-specialist teachers are to be developed on the basis of extensive needs, target group and task analyses. The project is aimed at teachers who have acquired a teaching qualification for two subjects (first and second state examinations) without Mathematics as a subject, but who teach Mathematics at their schools in these grades.