ABC's--learning to read http://www.starfall.com/
Clifford--play and learn http://www.scholastic.com/clifford/play/index.htm
Learning that sticks. http://www.earobics.com/gamegoo/gooey.html
PBS Kids Games and activities/Arthur and D.W. http://pbskids.org/arthur/games/index.html
Reggie's Rhyming Words http://teacher.scholastic.com/activities/bll/reggie/home/index.htm
Math 123 order http://www.learningplanet.com/act/123order.asp