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In this activity, learners explore the concept of density by pouring 5 different liquids into a jar. Food coloring is added if needed to give each liquid a distinct color.

In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

This activity/demo introduces learners to aerogel, a glass nanofoam. Learners discover how aerogel is made and how well it insulates as well as learn about aerogel's other unique properties.

In this activity, learners work in groups to determine the mass and volume of four samples: glass marbles, steel washers or nuts, pieces of pine wood, and pieces of PVC pipe.

This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

In this activity, learners use simple items to construct a device for indicating air pressure changes.