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    In this engineering design challenge, learners make a bird and then control its flight with attached strings. As learners work their way through the design process, they can upload descriptions and...

    $1 - $5 per group Ages 4 - 18 1 to 2 hours
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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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    In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back. As learners work their way through the design process, they...

    $1 - $5 per group Ages 4 - 18 1 to 2 hours
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    In this engineering design challenge, learners build an air-powered spinning machine. As learners work their way through the design process, they can upload descriptions and images of their plans,...

    $1 - $5 per group Ages 4 - 18 1 to 2 hours
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    In this engineering design challenge, learners build an octopus-inspired suction pad that can grab an object and hold it tightly in the air. As learners work their way through the design process,...

    $5 - $10 per student Ages 4 - 18 1 to 2 hours