Website
US Government Publishing Office

Ben's Guide to u.s. Government: The Constitution

For Students 3rd - 8th
Ben's Guide is a fun way to present U.S. Government to students grades K-12. This site presents a brief history of the Constitution. Links to related sites are available.
Unit Plan
The Dirksen Congressional Center

Congress for Kids: Delegates to the Constitutional Convention

For Students 3rd - 5th
The Constitutional Convention of May 1787 is explained in kid-friendly terms. Suggestions for research projects, resource links and some activities are included. The rest of the site has lots more information on the US government.
Website
Ducksters

Ducksters: Holidays for Kids: Constitution Day and Week

For Students 1st - 9th
Kids learn about Constitution Day and Week. The history and facts about this holiday that celebrates the US Constitution.
Website
PBS

Wnet: Thirteen: Freedom: A History of Us: Forgetting the Constitution

For Students 9th - 10th
Read the story of a young Japanese-American girl whose family was sent to an internment camp after Pearl Harbor.