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    Twin Cities Public Television
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    In this activity (on page 2 of the PDF), learners will discover how the shape of an object, not just its weight, determines whether it floats or sinks. After a ball of aluminum foil sinks in a...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners build a hovercraft using a paper plate, cup, and simple motor. Learners follow simple instructions that include helpful photos to build a vehicle that glides over a...

    $1 - $5 per student Ages 6 - 14 45 to 60 minutes
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    NASA
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    In this activity, learners simulate a multistage rocket launch using party balloons, fishing line, straws, and a plastic cup. Educators can use this activity to explain how inventors have refined...

    $1 - $5 per student Ages 8 - 18 45 to 60 minutes
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    NOAA
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    In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon. Learners role play as miners, power plant operators, car drivers, and home...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room. The activity guide contains information for Educators...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes. During the first round, they calculate the average distance the planes fly and...

    $1 - $5 per group Ages 8 - 18 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners build an old-fashioned paddle boat out of simple materials. Use this activity to introduce learners to potential energy, kinetic energy, Newton's Laws of Motion, and...

    $1 - $5 per student Ages 6 - 14 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners construct speedy vehicles made out of paper plates and powered by twisted rubber bands. This toy is an excellent demonstration of potential and kinetic energy and how...

    $1 - $5 per student Ages 6 - 18 45 to 60 minutes
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    Community Science Workshop Network
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    In this activity, learners string a line across the room and build cable cars that can move from on end to the other. Learners construct their cable cars out of wood sticks, motors, and electrical...

    $1 - $5 per student Ages 8 - 18 45 to 60 minutes