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In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

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

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

Learners explore their surroundings while reasoning about categories and counting.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.

In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

In this demonstration, adult learners create a lava lamp using beer and nuts! Use this pub-themed activity to demonstrate the effects of buoyancy and bubbles.

In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.

Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.

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

In this activity about the solar system, learners use various light sources to examine ice with different components to understand how NASA studies planets and moons from space.