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    National Geographic Society
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    In this activity, learners are challenged, using everyday objects, to create simple machines to complete specific tasks. Learners will discover how simple machines make work easier and how simple...

    $5 - $10 per group Ages 6 - 14 45 to 60 minutes
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    The Need Project
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    In this activity, learners determine whether thermal energy can be used for work. Learners put a balloon on a bottle and observe what happens when they put the bottle in hot water and then in ice...

    1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners build inexpensive pulley assemblies from pulley wheels used for sliding screen door replacement or from clothesline spreaders. Learners will investigate pulley behavior...

    $10 - $20 per group Ages 11 - 18 1 to 2 hours
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    The Exploratorium
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    In this physics activity, learners construct a small-scale version of a classic carnival game. A large marble is rolled along a track made from a commonly available and inexpensive metal shelf...

    $5 - $10 per group Ages 11 - 18 10 to 30 minutes
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    Children's Museum of Indianapolis
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    In this activity, learners explore work, forces, simple machines, and construction. This lesson guide includes simple ways to demonstrate these principles as well as hands-on activities. For...

    $1 - $5 per group Ages 4 - 8 1 to 2 hours
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    COSI
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    In this physics activity, learners experiment with pulleys and find that they can decrease the effort needed when using a pulley to lift or move different loads. This is an excellent activity to...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    Community Science Workshop Network
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    In this activity, learners build their own construction cranes using tongue depressors and pushpins. Learners use simple tools to build the cranes and then have fun operating the crane to scoop and...

    $1 - $5 per student Ages 6 - 14 1 to 2 hours
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    IEEE
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    In this activity, learners explore the concept of force and how pulleys are used in everyday life to make work easier. Learners examine different uses for pulleys, the impact of multiple pulleys,...

    $10 - $20 per group Ages 8 - 11 1 to 2 hours
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    IEEE
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    In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials. They then test their trebuchets to determine the farthest distance they can hit...

    $10 - $20 per group Ages 11 - 18 1 to 2 hours
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    IEEE
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    In this activity, learners review the history of gumball machines and explore potential and kinetic energy, while working in teams to build a gumball slide. Teams then design and build their own...

    Over $20 per group Ages 8 - 18 2 to 4 hours

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