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In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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Learners attach an egg to a rubber-band bungee cord and drop the egg.

1 cent - $1 per student Ages 8 - 18 30 to 45 minutes
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In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.

free Ages 8 - adult 10 to 30 minutes
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In this geology activity (page 3 of the PDF), learners simulate an earthquake with little more than an elastic band and drinking straws.

$1 - $5 per student Ages 14 - 18 10 to 30 minutes