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    WGBH
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    In this engineering activity (page 3 of PDF), young learners investigate how a pole can be made stable by “planting” its base in the ground or adding supports to the base. First, learners observe...

    $1 - $5 per group Ages 4 - 8 30 to 45 minutes
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    New York Hall of Science
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    This is an activity about motion, power, air and Newton’s Third Law of Motion, which states that for every action there is an equal and opposite reaction. Learners will harness the power of thrust...

    1 cent - $1 per student Ages 4 - 11 10 to 30 minutes
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    U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy
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    In this activity, learners work in groups to build simple solar stills filled with salt water. After the stills are complete, learners observe what happens when they place the stills in the sun....

    1 cent - $1 per group Ages 4 - 11 45 to 60 minutes
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    WGBH
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    In this water activity, learners discover ways to move water across the water table. Learners use various tools including squirt bottles, sponges, and turkey basters to move water from one...

    $5 - $10 per group Ages 4 - 6 10 to 30 minutes
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    NASA
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    In this activity, learners construct a simple air pressure launcher for paper rockets. Learners stomp or jump on an empty 2-liter bottle and force the air inside through connected plastic pipes to...

    $10 - $20 per group Ages 4 - 14 1 to 2 hours
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    Science Museum of Minnesota
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    Build a pinwheel that works without wind! This activity contains steps on how to build a parachuting pinwheel out of paper, a film canister, and some brads. Throw it off a high place and time how...

    1 cent - $1 per student Ages 4 - 8 30 to 45 minutes
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    BBC
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    In this activity, learners make pykrete by freezing a mixture of water and a material like cotton wool, grass, hair, shredded paper, wood chips, or sawdust. Learners discover that pykrete has some...

    1 cent - $1 per student Ages 4 - adult 4 to 24 hours
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    Sacramento Zoo
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    In this activity, learners make a backyard bird feeder with soda bottles and other simple supplies. Learners will recycle a plastic bottle to hold birdseed, create a perch for the birds to rest,...

    $1 - $5 per student Ages 4 - 11 30 to 45 minutes
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    U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy
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    In this activity, learners model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load. The game-like atmosphere engages younger learners and helps...

    $5 - $10 per group Ages 4 - 11 10 to 30 minutes
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    Iridescent
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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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