Modularization and semantics of learning objects in a cooperative knowledge space

The last couple of years have shown that eLearning is not accomplished by simply providing pdf or ppt files on the Internet. Learning concepts have to tie in with technical implementations so as to generate the added value that will lead students to actually make use of the advantages of digital learning. The contents of such a system must not be isolated but should draw connections to a variety of other topics. This would ensure a holistic education and at the same time ensure the semantic coherence of a larger number of lectures especially in engineering and the natural sciences.