Social Studies

http://www.lizardpoint.com/fun/geoquiz/index.html - site to practice geography

http://www.socialstudiesforkids.com/ - explore a variety of social studies topics

http://www.digitalhistory.uh.edu/timeline/timelineO.cfm - a digital timeline

http://www.biography.com/bio4kids/index.jsp - bio4kids from the Biography channel

http://www.kidspast.com/index.php - general world history info and games

http://bensguide.gpo.gov/index.html - guide to U.S. government

http://kids.nationalgeographic.com/kids/games/geographygames/geospy/ - geography games

American Revolution

Exploration

WWI

WWII

Westward Expansion

Middle Ages

Government