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    WGBH
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    In this design challenge activity, learners invent a convenient way for someone using crutches or a wheelchair to carry small personal items. Learners will experience some of the obstacles people...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this engineering activity, learners design and build a mechanical arm to lift a small item. Learners must follow certain design constraints as they build an arm that can lift a paper cup from...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear. This lesson plan includes information...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    In this engineering activity, learners explore simple machines and then build cardboard automata using cams. Learners are also challenged to build a complex machine--a moving sculpture that tells a...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    In this design challenge activity follow up to "Kicking Machine", learners add a hands-free feature to their Kicking Machine. Learners modify their kicking machine to have it either...

    $5 - $10 per student Ages 8 - 14 30 to 45 minutes
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    In this design challenge activity, learners build a car that uses a battery-operated motor to "drive" at least ten feet. Educators can use this activity as a fun, hands-on way to...

    $5 - $10 per student Ages 8 - 14 30 to 45 minutes
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    WGBH
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    In this design challenge activity, learners investigate series circuits and motors to build a hand-held "kick stick." Their goal is create a battery-operated device that sends a Ping-Pong...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is...

    $5 - $10 per student Ages 8 - 14 10 to 30 minutes
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    In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away. Learners use a pendulum, a rubber band, or a combination of the...

    $5 - $10 per student Ages 8 - 14 30 to 45 minutes
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    Hooray! In this design challenge activity, learners invent a device that launches a spoonful of confetti into the air. Learners are encouraged to create the biggest cloud of confetti possible....

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes

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