Massachusetts Kids' Zone
Massachusetts Study Project: State Symbols
State Symbols USA: Massachusetts
Commonwealth of Massachusetts: Facts about State Symbols
The Library of Congress
Colonial Williamsburg Kids Zone
GeoNet: Choose a map, and test your geography skills
Bens Guide to U.S. Government for Kids
The National Archives
White House for Kids
Memorial Hall Museum: Online activities that let you explore the past...
100 Milestone Documents of American History
Plimoth for Kids
Kids.gov