This prediction game from Richard Wiseman will predict your every move.
You begin by placing your finger over the piece of paper that says “start”. From here you must move when Richard begins counting, one move for every number. You can go left and right, up and down but not diagonally. No matter what you do, the outcome is always the same.
Play in the classroom by drawing the icons on your whiteboard and eliminating the same icons as Richard in the video. Your class will think you have magic powers — which obviously you do.