Hofstra University
Hofstra University: An Introduction to the Derivative
This lesson from the Hofstra University discusses the derivative. The lesson begins with the average rate of change of a function and discusses how this is related to the derivative of a function at a point. The site gives visual aids...
Interactive Mathematics
Interactive Mathematics: The Derivative
The examples presented here demonstrates finding the derivative of a function using "h" rather than "delta x" notation. Graphs are included as a visual aid.