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Why are Compact Fluorescent Bulbs More Efficient?
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In this activity, learners explore the relative efficiency of different bulbs, specifically incandescent vs. fluorescent.

Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.

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.

Observing the Moon
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Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

Penny Battery
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In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.

Safe in the Sun
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In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.