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In this activity, learners explore and compare the buoyant properties of materials found in nature and in human-made materials.

1 cent - $1 per group Ages 4 - adult
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In this physics activity, learners will explore buoyancy.

1 cent - $1 per student Ages 4 - adult 10 to 30 minutes
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Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes