When working with e-teaching materials we often find that the authors of resources, meant for the use of teachers in the teaching process, do not use the opportunities offered by the new technologies. All too often the materials are a monolithic block (or at least their main part is), constructed the way an ordinary book or workbook would be. This demands that the teacher takes them as a whole; precisely in the order they were written in. Is that really necessary? But do all teachers need the same form of resources, do they want to use them in the same order, and do they want their students to see the same examples, do the same exercises? Why not use the possibilities that new technologies offer and at the very least give teachers the chance to adapt the materials to their own and their students' needs. (Contains 10 figures.)