California Open Source Textbook Project The (COSTP) is a collaborative, public/private undertaking. It has
been created to address the high cost, content range, and consistent
shortages of K-12 textbooks in California. http://www.opensourcetext.org/index.htm
Internet Archive The Open Educational Resources Archive is a collection of educational
content including coursework, study guides, exercises, and recorded
lectures. It is meant for students, teachers, and self-learners at all
levels. http://www.archive.org/details/education
