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These Snacks are a healthy, filling way to satisfy your late-afternoon hunger for science. Try building them with friends!
Stare at one color—but see another.
If you want to stay hidden, you'd better stay still.
Make a record player with a pencil, pin, and paper.
Wield electrons and protons to roll cans.
Create a sound system for music only you can hear.
Make a simple mini-motor.
This surprising instrument is fun to make—and even more fun to play.
Short bursts of moving images produce some interesting effects.
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