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    American Physical Society
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    Learners shine the light of a laser pointer through sheets of fabric that all have a different number of threads per inch. By looking at the patterns created, learners calculate the wavelength of...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    WGBH
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    In this design challenge activity, learners build a four-stringed instrument that can play a tune. This lesson plan includes information on sound energy and pitch and the design process, as well as...

    $1 - $5 per student Ages 8 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response. These vibrations travel in waves up and...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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    Lawrence Hall of Science
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    In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill. Learners fill a large bottle with water, blue coloring and hair conditioner ...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    American Physical Society
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    In this activity on page 13 of the PDF, learners use a laser pointer (with known wavelength of light) to measure the thickness of a human hair. By shining the laser on a hair, analyzing the...

    $5 - $10 per group Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    Put a string around your head, and play it! Learn about vibration, sounds, and pitch.

    1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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    The University of Texas McDonald Observatory
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    Can gelatin (like Jell-O ®) change the speed of light? Learners investigate the refraction properties of gelatin to calculate its index of refraction and discover that as the light travels through...

    $5 - $10 per group Ages 14 - 18 1 to 2 hours
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    American Physical Society
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    Learners examine the properties of light by experimenting with an LED-flashlight and polarizing filters. When two polarizers are used, they block all light when they are placed at right angles....

    $10 - $20 per group Ages 11 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners explore liquid crystal thermometers to observe how heat flows by conduction, convection, radiation, and evaporation. This resource includes five mini-explorations in...

    $5 - $10 per student Ages 11 - 18 45 to 60 minutes
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    The Exploratorium
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    Did you know that a Slinky makes a handy model of earthquake waves? In this activity, learners use one or two of these simple toys to illustrate the different kinds of waves that transmit the...

    $1 - $5 per group Ages 8 - 18 10 to 30 minutes

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