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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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    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 18-28), learners explore how the shape of seeds affects how they are dispersed by wind, birds, ocean currents and other means. Learners make predictions about seeds'...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    University of Nebraska State Museum
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    This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself. This illustrates how the tall rain forest trees adapt to support a huge...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours

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