I don’t use these solutions, but I see how functional they can be. I use AppleTV for mirroring onto my digital whiteboard.
Using Reflection
http://ipadeducators.ning.com/video/mirror-multiple-ipads-with-reflection
Using AirServer
http://ipadeducators.ning.com/video/airserver-mirroring-ios-devices-to-your-mac-and-now-pc-also