Not everything you do will require the MakeyMakey  Scratch has many built in features the react to the physical world.  You may recall from last year how the spirits could interact with each other.  If they bumped into each other or if they ran to the end of the screen? Some new ones include Video Motion and Sound

Quick video to explain:

Challenge 1 – Fix the Scratch game so that bot of the mini figs are in the game.

Challenge 2 – Change flappy myth game to be controlled by video motion rather then space bar

Challenge 3 – Build a scratch game that tells the class to be quiet when it is to loud.

Challenge 4 – Use sensing in your game.