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    Oregon Museum of Science and Industry
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    In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the...

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    New England Aquarium
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    In this activity, learners explore how salt water freezes in comparison to fresh water. Use this experiment to consider how pond animals survive cold winters in comparison to animals that live in...

    1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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    NASA
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    In this activity, learners build models of comets, using edible materials, to learn about comets' structure. Learners then use their senses to simulate a spectrometer to analyze "comets...

    Over $20 per group Ages 6 - 18 45 to 60 minutes