Apple VGA Adapter->How to connect your iPad to the Smart Board (or other interactive whiteboard.) Also explains how to share your computer screen with students and let kids share their screens so they can show the class their work.
How to Project iPAD or iPhone Screen onto a Computer
12 Apps for the One iPad Classroom You don’t have to be in a one to one iPad classroom to integrate this powerful tablet into your everyday routine. Here are just a sampling of some great apps to use with your one iPad: