Green Screen
There are 2 Green Screen kits that are able to be signed out for use with students. Green Screens are what allow an item to be changed to another image. You can find this app on iPads - called the Green Screen by Do Ink app. Looks like the picture on the side.
Ways you can use it in the classroom:
Have students reenact an event in Social Studies i.e. finding oil in Leduc and have them change the background to suit the event
Have students create a video of a math concept in another app (i.e. Clips) and upload it as the layer behind them and explain the concept in front of it as it is displaying
Do a puppet show and change the background to suit the story they are telling
Have students create a background to look like a racetrack and show their vehicle builds for science and videotape them being raced.