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In this two-part activity, learners investigate buoyancy, density and surface area as well as biodiversity and the relationship between the structure and function of organisms.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this two-part lesson, learners discover how large bodies of water can serve as a heat source or sink at different times and how proximity to water moderates climate along the coast.

$5 - $10 per group Ages 11 - 14 1 to 2 hours
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In this hands-on activity, learners will become familiar with the special adaptations of rainforest plants and discover the conditions needed for tropical trees to survive along with what can impinge

$1 - $5 per group Ages 8 - 11 30 to 45 minutes
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In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners use simple materials to build their own compass.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners investigate soil erosion. Learners set up a simulation to observe how water can change the land and move nutrients from one place to another.

$1 - $5 per student Ages 6 - 11 10 to 30 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 activity, learners conduct three experiments to examine temperature, the different stages of the water cycle, and how convection creates wind.

$1 - $5 per group Ages 4 - 11 45 to 60 minutes
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In this activity, learners explore density, convection, stratification, and, by inference, the melting of icebergs. Learners make hypotheses, test their hypotheses, and explain their observations.

1 cent - $1 per group Ages 11 - 18 30 to 45 minutes
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In this activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this geology activity learners build a "squeeze box," which allows them to compress layers of sediment. This is a great way to investigate folding and faulting in the Earth.

$10 - $20 per group Ages 8 - 18 5 to 10 minutes
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In this activity, learners will engineer three different parachutes to test how well each one works.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation about the different causes of glacial melt.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this inquiry-based activity, learners investigate the basic forces of flight as they construct their own paper glider that represents a rainforest creature from Borneo (large, tropical island in So

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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This demonstration/activity helps learners understand why higher elevations are not always warm simply because "hot air rises." Learners use a tire pump to increase the pressure and temperature inside

$1 - $5 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners construct a traditional handicraft toy that illustrates a motion commonly associated with violins and earthquakes.

$1 - $5 per student Ages 6 - 11 45 to 60 minutes
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In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.

$5 - $10 per group Ages 8 - 14 2 to 4 hours
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In this quick and easy activity and/or demonstration, learners use two empty soda cans to illustrate Bernoulli's principle.

free Ages 6 - 18 5 to 10 minutes