I just watched this talk by Richard Baraniuk (link if embed doesn’t work), about opening up access to educational text and information. One of the most amazing ideas from his talk and the project they’re working on (Connections) is open-sourced text books.

The idea is that collaborative text-books, published on-demand could answer more questions and provide a better, more tailored resource to students and teachers. If educational resources are produced with granularity (i.e. like ‘Lego’ blocks which can be reused at a small level) they can be used and reused in a variety of novel and unpredicted ways.
Have a look and let me know what you think!