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    American Association for the Advancement of Science
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    In this lesson that includes hands-on activities and demonstrations, learners discover that it is the tilt of the Earth's axis (not its proximity to the sun) that causes the seasons. Learners...

    free Ages 11 - 14 45 to 60 minutes
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    IEEE
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    In this activity, learners explore the concept of how engineering solved the problem of human/computer interface. Learners disassemble a mouse and explore the movement on the X/Y axis that...

    $10 - $20 per group Ages 8 - 18 1 to 2 hours
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    American Physical Society
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    Learners examine what happens when a tube spins in two directions at once. They push on a cardboard tube causing it to spin along its length while at the same time turning from end-to-end. Markings...

    1 cent - $1 per student Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    This activity shows how our experience of the Sun changes with time and location. The sun dagger at Chaco Canyon is thought by many to be a sort of ancient timekeeping device. By creating a place...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    Pratt School of Engineering, Duke University
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    Learners construct and use a "real" 3D coordinate system out of balsa wood and foam core. They will then be able to locate coordinates in space. They will also be asked to find the...

    $1 - $5 per group Ages 11 - 14 30 to 45 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
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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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    4-H
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    In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction. The activity can be done outdoors on a windy day or...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes