Geography

World Countries - Gives videos, maps, flags, and information about all the countires in the world
http://www.geognos.com/
Know Your States - Game that tests students on their knowledge of state locations.
http://jimspages.com/States.htm
National Geographic - Geography Action! - http://www.nationalgeographic.com/geography-action/index.html

History

Histrory Pin - Allows you to use Google Maps and Google Street View to see real people's history at a particular location - http://www.historypin.com/
Preceden - Create a time line for today or from history - http://www.go2web20.net/site/?a=Preceden
xtimeline - Create a time line and add videos and photos - http://www.xtimeline.com/
American Presidents: Portrait Gallery - Information on all the US presidents - http://www.americanpresidents.org/gallery/
Museum Box - Place objects in the box that represent a specific time period - http://museumbox.e2bn.org/
Slaves and the Courts (from the Library of Congress)

Pete's Power Point Presentations

Read Write Think

Glencoe Online Resources
National Council for Social Studies

National Geographic Education

My Wonderful World (Geography)

Fact Monsters

Kids in the House

Reading Quest/Graphic Organizers for Social Studies

www.pptpalooza.net - poweroints for history

Civil War Web Quest

History Interactives

Social Studies Webquests