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    PBS
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    In this "Sid the Science Kid" activity, learners observe reversible change while thinking about ways to make ice melt. Learners freeze a piece of fruit in an ice cube and then explore...

    $1 - $5 per group Ages 4 - 6 2 to 4 hours
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    American Museum of Natural History
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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. The ratio of light reflected to that received is...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners experiment with hydrogen peroxide, vinegar, yeast, and baking soda to produce hot and cold reactions. Use this activity to demonstrate exothermic and endothermic reactions.

    $5 - $10 per student Ages 8 - 18 10 to 30 minutes
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    NOAA
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    In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation. Learners compare the melting rate between chocolate left in the sunshine and chocolate...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    COSI
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    In this physics activity (page 4 of the PDF), learners will construct their own spiral "snake" and use it to explore the relationship between heat and kinetic energy. They will observe...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    WGBH
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    In this activity, challenge learners to keep an ice cube from completely melting in 30 minutes. Learners engineer a box or wrap to prevent an ice cube from melting. Use this activity to introduce...

    $1 - $5 per student Ages 6 - 11 30 to 45 minutes
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    Children's Museum Of Houston
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    In this activity, learners heat ice and water of the same temperature to get a hands-on look at phase changes. This is an easy and inexpensive way to introduce states of matter and thermodynamics....

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners explore liquid crystals, light and temperature. Using a postcard made of temperature-sensitive liquid crystal material, learners monitor temperature changes. By observing...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    NASA
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    In this activity, learners are introduced to challenges of maintaining temperatures while living in space. Thinking and acting like scientists and engineers, learners experiment to learn how to...

    $5 - $10 per group Ages 14 - 18 1 to 7 days
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    Mount Holyoke College
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    In this activity, learners investigate the effect of heat on a reaction. Learners first model molecular motion by moving their bodies (running, moving slowly) and pretending to be molecules at...

    $1 - $5 per student Ages 4 - 11 10 to 30 minutes

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