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    Twin Cities Public Television
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    This is an activity (located on page 4 of the PDF) about surface area and reactivity. Learners will perform a variation on the popular soda geyser activity, using different sizes of rock material...

    $10 - $20 per group Ages 8 - 14 1 to 2 hours
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    COSI
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    In this chemistry activity (page 8 of the PDF), learners will identify the instances of physical change, chemical change, and solutions while making homemade soda pop. They will watch as yeast in...

    $10 - $20 per group Ages 8 - 14 1 to 7 days

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