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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners investigate weight by building a spring scale. They observe and record how it responds to objects with different masses. This activity can be combined with other activities to create a...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    The Exploratorium
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    In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp...

    $5 - $10 per group Ages 11 - 18 5 to 10 minutes
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    PhET
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    In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping. Learners can even slow time and transport...

    free Ages 8 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners build a Wilberforce Pendulum, a special coupled pendulum in which energy is transferred between two modes of vibration, longitudinal ("bounce') and torsional (...

    $10 - $20 per group Ages 11 - 18 10 to 30 minutes
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    NSBRI
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    In this activity (on page 6 of the PDF), learners plot the path of the sun's apparent movement across the sky on two days, with the second day occurring two or three months after the first....

    $1 - $5 per group Ages 8 - 14 1 to 7 days
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    WGBH
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    In this activity, learners design a bungee jump for an egg using nylon stockings. Learners adhere to specific design constraints (egg must stop within 2 inches of the floor when dropped from 5 feet...

    $1 - $5 per student Ages 6 - 11 30 to 45 minutes