American Battlefield Trust
American Battlefield Trust: Civil War: Fort Sumter April 12 14, 1861
Extensive information about the Battle of Fort Sumter. Includes maps, battle facts, biographies of the commanders, articles, historical resources, historic images, and even a 3-D photo presentation (which requires special 3-D glasses).
Ducksters
Ducksters: Quiz: The Battle of Fort Sumter Practice Questions for Kids
History Questions: Battle of Fort Sumter Quiz, Test, and WebQuest.