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    Twin Cities Public Television
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    In this quick activity (page 1 of PDF), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints. The goal is to set off the highest...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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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