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    University of Washington
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    In this activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste. Learners dry their tongues with clean paper towels and then taste samples of salt,...

    $1 - $5 per group Ages 8 - 18 5 to 10 minutes
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    The Exploratorium
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    In this quick and simple activity, learners explore how the distribution of the mass of an object determines the position of its center of gravity, its angular momentum, and your ability to balance...

    1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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    American Physical Society
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    In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass. The surface tension of the...

    free Ages 8 - 14 5 to 10 minutes
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    Bill Nye
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    In this activity, learners discover how sweating makes us feel cooler. Learners put on one damp sock and one dry sock and sit in front of a fan. As the water in the damp sock evaporates, it makes...

    free Ages 4 - 14 5 to 10 minutes
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    Bill Nye
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    In this activity, learners discover that it is difficult to trace a curve by using its reflection in a mirror. Use this activity to discuss how the brain works.

    1 cent - $1 per student Ages 6 - 18 5 to 10 minutes
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    Museum of Science and Industry, Chicago
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    Learners add salt to ice to chill it lower than its freezing point. This chilled ice can then be used to freeze milk and sugar into ice cream. Learners can experiment by adding different flavors...

    $5 - $10 per group Ages 8 - 18 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    Extract your DNA from your very own cells! First, learners swish salt water in their mouth to collect cheek cells and spit the water into a glass. Then, learners add liquid dishwashing detergent...

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    NOAA
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    In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater. This...

    1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
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    Twin Cities Public Television
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    In this quick activity about the properties of water (page 1 of PDF), learners will use an eyedropper to slowly place one drop of water at a time onto a penny, counting the number of drops until...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners conduct a simple test to find their blind spot. This guide includes a variation of the main activity as well as instructions on how to find the approximate size of the...

    1 cent - $1 per student Ages 8 - 14 Under 5 minutes

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