Free open source and public domain material web sites
Free open source and public domain material web sites with
Textbook or other curriculum materials
Creative Commons materials http://www.creativecommons.org/
Flat World Knowledge http://www.flatworldknowledge.com/educators
Open Educational Resources Center for California http://grou.ps/oercenter/
Project Gutenberg books http://www.gutenberg.org/wiki/Main_Page
Project MERLOT http://www.merlot.org/
Please note: most of these resources are online full text. Please examine and adhere to any copyright or permission's statements in these resources.