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

In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

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

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.