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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.

$5 - $10 per group Ages 8 - 18 5 to 10 minutes
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Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

$5 - $10 per student Ages 8 - 18 10 to 30 minutes
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In this long-term activity, learners make a home for a colorful community of microorganisms.

$5 - $10 per student Ages 8 - 18 1 to 4 weeks
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In this hands-on activity, learners investigate the functional design of leaves on a tree.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this health, cooking, and math activity, learners explore nutrition and examine nutrition labels.

Over $20 per group Ages 8 - 14 2 to 4 hours
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In this activity related to Archimedes' Principle, learners use water displacement to compare the volume of an expanded gummy bear with a gummy bear in its original condition.

$1 - $5 per group Ages 11 - 18 1 to 7 days
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In this trick, hold your hand over a burning candle without getting burned, by reflecting and transmitting the light of two candles. This activity is best suited as a demonstration.

$1 - $5 per group Ages 8 - 18 5 to 10 minutes
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In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how greenhouse gases cause

free Ages 8 - 14 45 to 60 minutes
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In this activity, learners work in groups to create a time line representing significant moments in their lives.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners use coverslips to collect organisms from a pond, estuary or marine environment and then examine what they have caught with a microscope.

$10 - $20 per group Ages 8 - 18 1 to 7 days
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In this activity, some learners pretend to be wolves, while the other learners pretend to be the prey of the wolf. The goal of the simulation is to have the wolves work together to survive.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners conduct the "Stroop Effect" test and explore what happens when they try to complete two simple tasks at the same time.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this activity (on pages 19-21 of the PDF) learners observe mold growing on potatoes. Preparation for this activity has to start a week before, to allow time for the mold to grow on the potatoes.

1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners examine antibodies and antibody recognition using a model.

Over $20 per group Ages 11 - 14 45 to 60 minutes
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This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

free Ages 8 - 18 10 to 30 minutes
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In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.

$1 - $5 per group Ages 4 - 18 45 to 60 minutes
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

free Ages 4 - adult 10 to 30 minutes
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In this outdoor activity and fun race, learners first find the most common type of tree in a forest site.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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Learners design different shaped bandages for different purposes. First, they draw their designs on paper.

$1 - $5 per student Ages 4 - 14 30 to 45 minutes