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Learners build simple catapults and use them to launch cotton balls.
$1 - $5 per group
Ages 11 - 18
45 to 60 minutes
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Learners construct and launch paper helicopters.
1 cent - $1 per group
Ages 11 - 18
45 to 60 minutes
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Learners drop two different masses of play dough and observe how long it takes them to hit the ground.
$1 - $5 per student
Ages 11 - 14
30 to 45 minutes
