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In this activity, learners touch supercooled water drops with an ice crystal and trigger the water drops to freeze instantly.

This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.

In this activity, learners create a tornado in a bottle to observe a spiraling, funnel-shaped vortex. A simple connector device allows water to drain from a 2-liter bottle into a second bottle.

In this hands-on botany activity, learners sprout vegetables in film canisters.

In this activity, learners use simple materials to create giant bubbles.

In this activity, learners follow a recipe to make hollandaise sauce. Learners discover how cooks use egg yolks to blend oil and water together into a smooth mix.