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    Iridescent
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    In this engineering design challenge, learners make a bubble maze that allows bubbles to move through a series of “on” and “off” switches. As learners work their way through the design process,...

    $5 - $10 per group Ages 4 - 18 1 to 2 hours
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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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    National Geographic Society
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    In this activity, learners are challenged, using everyday objects, to create simple machines to complete specific tasks. Learners will discover how simple machines make work easier and how simple...

    $5 - $10 per group Ages 6 - 14 45 to 60 minutes
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    COSI
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    In this physics activity (page 3 of the PDF), learners will move a load using a lever of each of the 3 classes. They will explore the differences between these classes and which are more effective....

    $1 - $5 per group Ages 14 - 18 10 to 30 minutes
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    COSI
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    In this physics activity (page 6 of the PDF), learners will build a class 1 lever and hypothesize and test the distances two objects need to be placed from the fulcrum in order to balance. They...

    1 cent - $1 per student Ages 14 - 18 10 to 30 minutes
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    WGBH
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    In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm. Learners will follow the design process to build a grabber that can reach...

    $1 - $5 per student Ages 8 - 14 30 to 45 minutes
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    WGBH
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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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    Community Science Workshop Network
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    In this activity, learners build a figure that moves and "comes to life" when they pull its string. This engineering activity introduces learners to simple machines, specifically levers,...

    $1 - $5 per student Ages 6 - 14 1 to 2 hours
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    Community Science Workshop Network
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    In this activity, learners build a toy that flies in circles. This activity introduces learners to center of mass, torque, and rotational motion. <b>[Activity is publicly available through a...

    $5 - $10 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 build a mini crank machine to make a bird "fly." This engineering activity introduces learners to automata, rotational motion, cranks and cams. <b>...

    $1 - $5 per student Ages 6 - 11 1 to 2 hours

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