All: ReadWriteThink: Online Learning

http://www.readwritethink.org/: International Reading Association (IRA), National Council Teachers of English (NCTE), MarcoPolo Education Foundation

This site provides various lesson plans for integrating Internet content into literacy lessons.It includes grade appropriate lesson plans (reading levels K-12) and applies NCTE/IRA standards.
You can search for lessons by reading level, literacy strand or literacy engagement.

There is also an extensive list of web resources:(http://www.readwritethink.org/resources/index.asp)