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    COSI
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    In this activity about light, learners explore how water can refract light and change the way they see things. In the "Now Explore" section, suggestions for other liquids are given, and...

    1 cent - $1 per student Ages 8 - 11 10 to 30 minutes
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    COSI
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    In this activity, learners explore why frost forms. They create their own frost using a solution of ice water and salt in a glass. The salt allows the temperature of the water to drop below the...

    1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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    COSI
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    In this physics activity, learners will explore the concept of buoyancy, especially as it relates to density. They will experiment with different materials while participating in a design challenge...

    $1 - $5 per group Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this hands-on science experiment, students combine their understanding of the different states of matter and the characteristics of various chemical reactions. Learners also use the scientific...

    $10 - $20 per group Ages 6 - 11 45 to 60 minutes
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    NISE Network
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    “Exploring Earth: Rising Sea” is a hands-on activity demonstrating ways to use topographical mapping techniques to track changes in sea level. The activity is connected to current NASA research....

    free Ages 6 - 14 5 to 10 minutes