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    WGBH
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    In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan. Learners will build a sturdy frame...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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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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    University of Nebraska State Museum
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    In this activity (on pages 12-15), learners make a crater model and test the effects of weather (rain) on its surface. This activity helps learners understand how Earth's crust is constantly...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 36-39), learners make a model of a watershed out of paper, then run water down the mountain to simulate how rainfall and pollution affect watersheds. Learners are...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister. When...

    1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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    WGBH
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    In this design challenge activity, learners build a tower that’s at least 12 inches high with two or more parts that move (spin, sway, or flap) in the wind. This art meets construction activity...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    WGBH
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    In this design challenge activity, learners use two helium-filled balloons to build a blimp that can travel in a straight path across the room. The activity guide contains information for Educators...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this design challenge, learners build a boat that paddles itself using a rubber band as its power source. Learners follow the design process to make a boat out of cups, design and build working...

    $1 - $5 per student Ages 8 - 14 30 to 45 minutes
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    WGBH
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    In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking. This competitive, hands-on activity...

    $1 - $5 per student Ages 8 - 14 30 to 45 minutes

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