Practice writing linear equations

This applet that I developed using Geogebra generates a line, asks the user to provide an equation and then indicates whether the submitted equation is correct.

Connecting exponential equations and their graphs

This is a Geogebra applet created by Steve Phelps in which you construct the graph of an exponential function by placing the asymptote, the y-intercept and one other point. You then type in what you think the graph of your equation ought to be. The equation you type in is graphed so you can see if you're right.

Introduction to the Unit Circle

These are three versions of an applet that I created using GeoGebra to introduce students to the unit circle. One version presents the idea in terms of distance traveled around the circle. The other two present the idea in terms of the measure of the central angle. There is a radian version and a degree version.