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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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    Lawrence Hall of Science
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    In this online activity about the physics of momentum and velocity, learners design their own roller coasters. Once the track has been built, the roller coaster is tested using a virtual ball....

    free Ages 4 - 8 5 to 10 minutes
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    NISE Network
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    In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink. They examine printed paper with magnifying glasses, see a few demonstrations of how liquids behave...

    $10 - $20 per group Ages 4 - adult 10 to 30 minutes