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    American Chemical Society
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    In this activity, learners add food coloring to hot and cold water to see whether heating or cooling affects the speed of water molecules. Learners watch molecular model animations to see the...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    Museum of Science, Boston
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    In this activity, learners are challenged to design, build and test a birdhouse that will stay cool in the sun. Learners investigate concepts such as energy efficiency, properties of light, and...

    Over $20 per group Ages 8 - 18 30 to 45 minutes