Exploration and Demonstration
The Least Squares Regression Line
A big topic in AP Stats.

Sine Wave Generator
The relationship between the circle and the sine wave.

The (In)famous Mandelbrot Set
Zoom in on and explore the Mandelbrot Set.

Resources for Specific Classes
AP Stats
Some TI-89 programs written to speed up homework.

Φnd Out More - An Invitation to Research
Apocalypse Then - New Geometries
Euclid, you ain't seen nothing yet.

Infrequently Asked, Yet Worthy, Questions
How do you derive the Double-Angle and Half-Angle Formulae?