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    The Exploratorium
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    In this activity, learners work in groups to create a time line representing significant moments in their lives. Learners use scientific suffixes and prefixes to label their time lines, modeling...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing. Learners also discover that changing...

    $1 - $5 per group Ages 11 - 18 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners build a recording timer made from simple materials (e.g., small dc motor, sharpie pen, craft sticks, adding machine paper tape, etc.). The device produces a record of...

    Over $20 per group Ages 14 - 18 1 to 2 hours
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    American Physical Society
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    Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing. They can alter the mass of the yo-yo by adding play dough...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    NOAA
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    In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities. Learners demonstrate wave motion in...

    $1 - $5 per group Ages 11 - 14 1 to 4 weeks
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    American Association of Physics Teachers
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    This lab activity has learners create a pendulum with a one-second period. Learners explore different physical properties as variables, such as length of the string and mass of the bob, to...

    $1 - $5 per student Ages 11 - adult 45 to 60 minutes
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    The Exploratorium
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    Did you know that you would be a different age if you lived on Mars? It's true! In this activity, you'll learn about the different rotation and revolution periods of each of the planets...

    free Ages 8 - 18 10 to 30 minutes