How to react to the increasing heterogeneous student's previous knowledge

The previous knowledge of the students at the beginning of a study at universities is more and more dissimilar. The traditional classroom teaching cannot cope with this heterogeneity. Therefore one has to find suitable methods to adjust the knowledge of all students to a reasonably similar level. In this paper we present some adequate methods and techniques, which can easily be integrated into the curriculum and additionally enable the students to be actively involved in the development of the implementation of these techniques.