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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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    New York Hall of Science
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    Don't scream for ice cream -- make it with milk, sugar, flavoring and some 'salt-water' ice. Discover the chemistry of ice cream by creating your own.

    $1 - $5 per student Ages 4 - 11 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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    Make
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    In this chemistry meets cooking activity, learners make carbonated, vanilla ice cream using dry ice and denatured ethanol, which are both inexpensive and accessible. This process to make ice cream...

    Over $20 per group Ages 8 - adult 45 to 60 minutes