None Use a MaKey MaKey and a game board to play Operation. Use a pair of chopsticks and copper tape as your operation device and pluck organs from the holes in the game board. Don't touch the edges, though, or the patient gets sick! Build Instructions: http://makeymakey.com/guides/operation.php http://joshburker.blogspot.com/2013/01/makey-makey-scratch-operation-game.html
This is a minor change to the original game so that our students could use the bear as a template for their Operation game.
