Resources for teachers:
http://etc.usf.edu/lit2go/
http://www.pil-network.com/Resources/Tools/
http://www.ck12.org/teacher/
http://www.khanacademy.org/
http://welcome.curriki.org/resources-curricula/
http://www.oercommons.org/
http://cnx.org
http://en.wikibooks.org
http://thinkfinity.org
http://www.teach-nology.com/
http://www.hippocampus.org/