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In this activity, learners investigate the properties of different types of balls.

free Ages 8 - 11 1 to 2 hours
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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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In this math lesson, learners record and graph plant growth and interpret data. Learners plant seeds, and once the seeds sprout, record the change in height of the plants for several days.

$5 - $10 per group Ages 8 - 11 1 to 4 weeks