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In this activity, learners create a star show and discover how they can prevent light pollution. Using simple materials, learners first design constellation boxes.

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

In this activity, learners discover how sediment is affected in an oil spill. Learners investigate the differences between heavy and light oil as well as the differences between different sediments.

In this outdoor mapping activity, learners explore where plants grow and map plant-distribution patterns.

In this outdoor activity, learners discover how the environment around a building affects the growth of plants.

This is an activity about turbidity, or the amount of sediment suspended in water.

In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.