Free-Reading.net offers "an open resource center and community for early literacy teachers." This very colorful wiki site has 326 activities to date, and offers members an opportunity to create and upload their own. A Florida textbook adoption committee approved Free-Reading for K-12 public schools. The site is designed by Wireless Generation who's CEO, Larry Berger, turned the free DIBELS reading test into a for-profit venture by developing software that allowed the test to be scored by teachers on a handheld computer. He hopes to make a profit on Free-Reading by providing tech support and teacher training.
HippoCampus offers multimedia course materials for Algebra, American Government, Biology, Calculus, Environmental Science, Physics, Religion, and US History. Algebra, for example, has dozens of online activities related to six Algebra textbooks. HippoCampus is a project of the Monterey Institute for Technology and Education (MITE).
These sites look very promising! Let's hope schools take advantage of these free resources.