This is a simple and, we hope, appealing applet. The applet uses many examples to dynamically illustrate the Fundamental Theorem of Calculus and the meaning of the definte integral in terms of areas. The areas are shaded and the value of the integral changes as the user drags a slider.
Click the screen shot below to open the applet in a new window:
Note: The complete source code for both applets is available in the ActionScript 3 Tutorials section of Flash and Math in the tutorial on masking: Masking in Flash CS3