America's Story -"jump back in time" and meet famous people, read about important historical events, find info on pasttimes, listen to songs
http://www.americasstory.com/cgi-bin/page.cgi
Family Ties - Students can examine and comment on historical photographs, play games, and learn about famous people. As well, the "Family Ties" section gives ideas for investigating students' family history.
http://www.pbskids.org/wayback
Timeline of major events in U.S. history
http://www.kidport.com/RefLib/UsaHistory/UsaHistoryIndex.htm
American Memory
Library of Congress - Excellent site for primary source documents, Quick Time movies, lesson plans to help students study primary sources
http://memory.loc.gov/
Our America - covers parts of American history using an interactive timeline. Students explore a time period that includes historical background, historical journal entries, video clips, arts and craft ideas, and the opportunity to write their own journal entry
http://www.teacher.scholastic.com/activities/our_america
Colonial Williamsburg site - electronic field trips, information on artifacts
http://www.history.org/history/argy/argykids.cfm