H.M. LANGUAGE ARTS TEXTBOOK https://www-k6.thinkcentral.com
A.R. BOOK FINDER http://www.arbookfind.com/UserType.aspx
STORY LINE ONLINE http://www.storylineonline.net/
READ, WRITE, AND THINK http://www.readwritethink.org/search/?resource_type=72
STARFALL http://www.starfall.com/