Are you taking or teaching a geometry class? Then you’ll want to check out the Geometry Stash iPhone App created by Apparent Etch, a useful quick-reference tool for iPhone. The app is a dictionary of geometry postulates and theorems, and each is illustrated with a diagram. Users can find terms by using a search, or scroll through the definitions alphabetically.
Geometry Stash has an additional feature that turns it into a teaching tool. Users can connect their iPhones to an external display with a VGA adapter and project the diagrams onto a bigger screen. This feature would be great in a class room or for a group study session.
While the app may not necessarily help students memorize postulates and theorems, it can definitely make working on proofs for homework a snap. Instead of flipping through the chapters of your textbook or searching the index, you have all the definitions you need at your finger tips. There’s also an iPad version of the app available.