Social Studies
Geography
World Atlas (iPad)
Overlap Maps: instantly compare any two places on Earth
Urban Observatory: access and compare data sets from cities around the world
U.S. History
Mission US: a multimedia project to engage players in U.S. history content
A Crash Course in US History (videos)
Mount Vernon: virtual tour
American Revolution
The Corns Visit the 13 Colonies: A book created by students (iPad)
Civil War
Under His Hat: Learn about LIncoln from primary sources
Gettysburg: interactive sponsored by AP
Twentieth Century
Holocaust-Era Assets from the Nat'l Archives
Holocaust-Era Images from the Nat'l Archives
Holocaust Picture Books
Government
The Supreme Court: interactive timeline
Presidential Campaign Commercials: 1952-2012
Ancient History
Social Studies
Think Fast About the Past iPad app
The Cultural Institute: a virtual museum
Today in History: Library of Congress
History Engine: Educational Tool
HipHughesTV on YouTube
Picturing the Century: 100 yrs of photos
Larry Ferlazzo's list of sites for learning about Asia and the Middle East
All About Explorers: practice identifying valid information
World History
A Crash Course in World History (videos)
Wilson Center Digital Archives: International History Declassified
Life in the Iron Age: an interactive animation
Economics
Quest for Credit: YouTube video sponsored by mint.com