University of Hawai'i
University of Hawaii: Topics in Calculus
Good site on calculus with links to the topics about calculus.
Other
Calculus help.com: Tutorials for the Calculus Phobe
A dozen interactive tutorials are what help make the basics of calculus more clear for those students who need additional explanation. Clear directions, simple examples, and interesting graphics are all part of this resource.
Libre Text
Libre Text: The Power Rule
Good overall site defining the power rule and giving several examples to study.
Interactive Mathematics
Interactive Mathematics: Millionaire Calculus Game
This interactive game imitates the famous "Millionaire" game show and allows students to test there calculus knowledge. It requires that you really know your calculus and is a fun way to test yourself.