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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry-based challenge related to motion and design optimization. Groups of learners will use construction paper to build a model bobsled run for a...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Twin Cities Public Television
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    In this goopy activity, learners will model glacial movement with “gak,” a white glue and liquid starch mixture. Each fist-sized gob of gak represents a year’s worth of snow, accumulating to form a...

    Over $20 per group Ages 8 - 14 10 to 30 minutes
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    Twin Cities Public Television
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    In this activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets. Thinking about what happens inside the canister to...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes