Showcasing chess at elementary school Science Night

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ChipmunkChessCoach

Our elementary school (K-6) is having Science Night with vendors showcasing various topics in science.  I've run the chess club there for 3 years and was hoping to have a booth about science and chess that would be be engaging and educational. I've thought of showing them a live chess engine at work, but not sure that would be best.  Any ideas on what would be good to show tying science and chess together, or any presentations you've seen that would be good for students?

ilikewindmills
put a chess piece in a blender. voila you've made kaynight.