Here are some great sites for you to visit:

MATH

http://www.factmonster.com

http://nlvm.usu.edu/en/nav/vlibrary.html

http://www.oswego.org/staff/cchamber/techno/games.htm

http://www.coolmath.com/

http://www.everydaymath.org

http://www.coolmath4kids.com

SOCIAL STUDIES

http://www.michigan.gov/hal/0,1607,7-160-17447_18595_18596---,00.html

http://michigan.gov/mikids

http://www.michmarkers.com/default.asp

http://www.michiganhistorymagazine.com/kids/mitten_topics.html

Reading Planet

http://www.rif.org/

Yahooligans

http://www.yahooligans.com/