Graphun

The site describes this as, "Graphun is a 3d graph visualizer. It evaluates a custom expression for every point on a grid and displays the result. The grid can be rotated to inspect the result from different angles." This is a rather complex math program that older math students might find fascinating and useful. I'm not rating it, but will leave that up to the math teachers in the group.
 * Properties: **
 * Grade Level || MS, US ||
 * url || http://itunes.apple.com/us/app/graphun/id435718464?mt=8 ||