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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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    In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this activity (on page 2 of the PDF), learners will see the illusion of colors produced by a rotating black and white image known as Benham’s Disk. They will experiment with rotation direction...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this quick activity about predicting (located on page 2 of the PDF), learners working alone or in groups will use toothpicks to probe a clay ball with a small object hidden in its center and...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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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
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    This activity (page 2 of the PDF) is a full inquiry investigation into environmental adaptation. Groups of learners will observe fish at a zoo, aquarium, or fish store and categorize which way the...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours

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