Splashtop Whiteboard allows teachers and students to turn their Android tablet into an interactive white board. Once connected to their computer over Wifi, they can watch Flash media with fully synchronized video and audio, control PC and Mac applications then annotate lesson content all from an Android tablet. Now interact with students at their desk or present from all four corners of the class!

https://itunes.apple.com/br/app/splashtop-whiteboard/id437679527?mt=8