Display Recorder is probably my new favorite app for recording a screen cast on an iOS device. This wonderful inexpensive app ($1.99) is very user friendly and allows a user to record anything from their screen (audio/video) w/ the simple press of a button. Once the video is recorded a user can then export the video to YouTube, iPhoto Library, or open in other apps.
I highly recommend checking out Display Recorder by clicking here!!!'
For my educational iOS board on Pinterest click here.