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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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Using simple, inexpensive items, learners build and test submarine models.
$10 - $20 per group
Ages 11 - 18
45 to 60 minutes
