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This math activity exposes early learners to a variety of three-dimensional objects. Learners bring geometric solids (everyday objects) from home.

free Ages 4 - 6 10 to 30 minutes
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In this activity (page 23 of PDF), learners conduct an experiment to determine how the size and mass of a projectile affects the area and the volume of an impact crater.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes