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    WGBH
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    In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan. Learners will build a sturdy frame...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this physical sciences activity, learners explore friction. Learners investigate the factors that affect the force required to move an object. Learners prepare weighted shoeboxes and then...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this physics activity, challenge learners to lift a book with just air using a plastic bag and a straw. This activity demonstrates compressed air and forces. <b>[Activity is publicly...

    1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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    WGBH
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    In this activity, learners make plates levitate! Learners build "hovercrafts" using simple materials to explore friction and motion. <b>[Activity is publicly available through a web...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials. The goal is to have the marble go slow, so it takes as long as possible...

    $1 - $5 per student Ages 6 - 11 30 to 45 minutes
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    WGBH
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    In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink? Learners must adjust many variables in their boat design to maximize...

    1 cent - $1 per student Ages 6 - 11 45 to 60 minutes
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    The Tech Interactive
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    In this twist on a classic design challenge, learners will try to stop a bouncy ball from bouncing as they explore how to control the fall of an object. This is similar to the egg drop challenge,...

    $1 - $5 per student Ages 6 - 18 30 to 45 minutes
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    The Tech Interactive
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    In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work. This activity is a great...

    $5 - $10 per student Ages 6 - adult 30 to 45 minutes