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    Twin Cities Public Television
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    In this environmental engineering activity, learners build windmills using everyday items. The first challenge is to build windmills that spin when placed in front of a fan. The second challenge is...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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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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    NASA
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    In this activity, learners discover how NASA engineers develop experimental aircraft. Learners will use geometry and algebra to design, construct, and test an experimental wing to achieve maximum...

    $10 - $20 per group Ages 11 - 14 1 to 2 hours
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into hovercraft engineering and design optimization. Groups of learners with access to power tools and a wood shop will build a...

    Over $20 per group Ages 8 - 14 1 to 7 days
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    New York Hall of Science
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    In this activity, learners simulate the separation techniques that materials recovery facilities (MRFs) use and then design their own series of recycling techniques. Learners identify four ways...

    $1 - $5 per group Ages 11 - 14 1 to 2 hours
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    NASA
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    In this activity, learners work in NASA teams to build balloon-powered rockets using identical parts and compete to launch the greatest number of paper clips to "space" (the ceiling). The...

    $10 - $20 per group Ages 8 - 14 1 to 2 hours
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    Great Science for Girls
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    In this activity, learners work in groups to plan and build large structures using recyclable materials they have brought from home. The lesson plan includes questions to ask learners about the...

    $1 - $5 per group Ages 6 - 14 30 to 45 minutes
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    WGBH
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    In this design challenge activity, learners add a jet-propulsion system (i.e. a balloon) to a blimp so it flies straight and far under its own power. This lesson guide includes links to video clips...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    Center for Engineering Educational Outreach, Tufts University
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    Learners work with plastic sheeting, masking tape, and string to design the perfect material for plastic chair webbing, and then construct their webbing. Since the best webbing would resist...

    $10 - $20 per group Ages 11 - 14 1 to 2 hours
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    National Health Museum
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    In this activity, learners receive a labeled plastic film canister containing a material representing a pollutant (i.e. pencil shavings = a beaver's wood chips). The instructor (or a learner)...

    $10 - $20 per group Ages 8 - 18 45 to 60 minutes

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