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Learners follow a three-step process to start their own rock collection.

$1 - $5 per student Ages 8 - 14 1 to 7 days
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In this experiment, learners work in teams to investigate how the color of a surface influences its ability to reflect light and therefore heat.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners create three-dimensional shapes by making some origami models of simple boxes and containers.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Ancient trash tells archaeologists a lot about the past. In this activity, learners take a close look inside their trash can and think about the clues it offers about their lives.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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Learners construct a bird feeder from re-used materials. After hanging their feeder, they keep a journal about what birds visit the feeder.

$1 - $5 per student Ages 6 - 11 1 to 4 weeks
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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

$1 - $5 per student Ages 8 - 18 1 to 7 days
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In this activity, learners discover how solar energy can be used to heat water.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.

$1 - $5 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners make a model of the solid Earth's layers that's good enough to eat! Learners use tasty foodstuffs to simulate Earth's inner core, outer core, mantle, and crust.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners make a 3-D model of DNA using paper and toothpicks. While constructing this model, learners will explore the composition and structure of DNA.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this archaeology-related activity, learners build their own time capsule and choose a storage location and a date to reopen it.

$1 - $5 per student Ages 6 - 14 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 work in teams to simulate the process used by Global Positioning Systems (GPS) to determine the location of a fallen meteorite in Antarctica.

$1 - $5 per student Ages 11 - 18 10 to 30 minutes
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Learners grow sugar crystals (rock candy). They make a hot solution that has an excess of sugar dissolved in it, then as the solution cools, they see sugar crystals form.

$1 - $5 per student Ages 6 - 11 4 to 24 hours
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In this nighttime, outdoor activity, learners keep a record of what they see in the sky by drawing constellations, the Moon, and making note of the weather and conditions each day.

$1 - $5 per student Ages 8 - 14 1 to 7 days
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In this activity, learners explore the gait of horses by constructing flipbooks with British photographer Eadweard Muybridge's famous photographs.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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This activity helps learners understand how the angle of the Sun affects temperatures around the globe.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners explore mammal locomotion by constructing flipbooks.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners work together to create a life-sized drawing of the human nervous system.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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Learners make a mobile model of a carbon atom using clay, wire, and pipe cleaners.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes