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In this activity, learners explore Boyle's Law and discover that water will boil at room temperature if its pressure is lowered.

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

In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.

In this activity, learners investigate convection by using food coloring and water of different temperatures.

With a coffee filter, a black marker, and a cup of water, discover the secret colors hidden in black ink.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

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

In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.