I begin my 4 day lab on roller coasters. The physics students must do some work with the foam tubing that goes around pvc pipe for insulation. Cut down the length it makes a track that a marble can roll down. Students get excited with their plans and argue and debate and try and fail. My only comment to their questions is "I guess you'll figure it out" and go back to my magazine.
Students today read and play computer games but rarely make something. Now is their chance.
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