Multiplication

http://www.multiplication.com/

Jamestown Interactive Sites

http://www.historicjamestowne.org/learn/interactive_exercises.php

Jamestown Rediscovery

http://historicjamestowne.org/

America in 1607:  Jamestown and the Powhatan

National Geographic Society Interactive Website

http://ngm.nationalgeographic.com/2007/05/jamestown/jamestown-standalone