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Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
Exploring Structures: Butterfly
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In this activity, learners investigate how some butterfly wings get their color.
Photosynthesis and Transpiration
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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.