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Start a Rock Collection
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Learners follow a three-step process to start their own rock collection.
Arctic Story Puzzles
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This activity has three story puzzles learners can solve to learn about life in the Arctic.
Carbon Dioxide Removal
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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.
Make a Terrarium
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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.
Create a Compass
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In this activity, learners use simple materials to build their own compass.
Simple Submarine
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Using simple, inexpensive items, learners build and test submarine models.
How Greenhouse Gases Absorb Heat
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Learners observe two model atmospheres -- one with normal atmospheric composition and another with an elevated concentration of carbon dioxide.
Crazy Camouflage
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In this activity about camouflage, learners create a model that shows how a flounder is able to blend into a variety of environments.
Make Your Own Weather Station
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This three-part activity shows learners how to build three meteorology tools: a wind vane, a rain gauge, and a barometer.