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In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is tilted or inverted, the mixture dramatically sorts into a layered pattern.

$5 - $10 per group Ages 11 - 18 1 to 2 hours
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In this activity, young learners will explore shapes, textures, and geometries using household materials.

free Ages 4 - 8 10 to 30 minutes