The interaction between teaching practice and theoretical conceptions - A cooperative model of in-service training in statistics for mathematics teachers (grades 5-10)

In the following paper, I shall investigate a fundamental relationship with regard to the particular conditions of in-service training and to the requirements of appropriate teaching material for statistics. Everything I shall describe and the material I shall present is the result of a cooperative project between mathematics teachers and researchers for the development of statistical material suitable for the in-service training and the everyday lesson planning of teachers.