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Learners experiment with a 2-liter plastic bottle containing water and four “divers." The divers consist of open, transparent containers with the opening points downward.

1 cent - $1 per group Ages 6 - adult 10 to 30 minutes
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In this physics activity, learners will explore the concept of buoyancy, especially as it relates to density.

$1 - $5 per group Ages 6 - 11 10 to 30 minutes
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In this activity learners will explore the concepts of density and matter in their quest to answer one simple question-will it sink or will it float?

$1 - $5 per student Ages 4 - 11 5 to 10 minutes