Math Tutorial Videos...very cool!
NASA for Students
National Geographic for Kidshttp://www.nationalgeographic.com/kids/
Multiplication and Division Facts, Decimals, Integers, Geometry, etchttp://www.math-drills.com/
Explore: What formed our Earth?http://www.mnh.si.edu/earth/mainframes.html
Cool Marine Science Facts
http://www.coolclassroom.org/whatscool/howwestudy.html