“Recycling didactical design?” is a theoretical and analytic project based upon two blended learning courses, in this report named scenarios. Scenario 1 was most successfully evaluated and therefore its didactical design more or less was copied in carrying out scenario 2. This scenario, however, was no success at all. The project now focuses on what kind of role didactical design has to the ICT-supported collaborative learning processes for communities of practice within groups of students and Bachelors of Social Education? The project designs a new interactive model in order to provide the organizer of blended learning courses with at tool for appropriate didactical design. This model is used in an analysis, comparing the two scenarios and discussing them theoretically. The conclusion of the project is that e-readiness amongst the participants is of great importance and that the organizer of blended learning courses must be capable of reflecting critically when recycling didactical design. Inside the report is a more detailed English abstract.