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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.

Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

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.

This activity guide features three related explorations to help learners ages 3-6 investigate shadows via the following science concepts: A shadow is made when an object blocks the light; you can chan