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    APSnet
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    In this four-part laboratory exercise, learners investigate properties of Tobacco mosaic virus (TMV) including (1) symptoms induced by the virus in susceptible plants at the macroscopic and...

    Over $20 per group Ages 14 - 18 1 to 7 days
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    Lunar and Planetary Institute
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    In this activity, learners discover that the Moon, like Earth, is made up of layers of different materials. Learners work in teams to make models of the interiors of the Moon and Earth. Common food...

    Over $20 per group Ages 8 - 14 45 to 60 minutes
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    NOAA
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    This activity models the mass coral spawning event that takes place at Flower Garden Banks National Marine Sanctuary every August. The result is like a snow globe in which the “snow” floats up...

    Over $20 per group Ages 8 - 14 45 to 60 minutes
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    Make
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    In this activity, learners use a pneumatic trough (see related activity) to generate and collect pure oxygen. Learners will test to see if they've generated oxygen by observing the combustion...

    Over $20 per student Ages 14 - adult 30 to 45 minutes
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    Twin Cities Public Television
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    In this technology activity, learners light up the room with electrifying play dough creations. Learners use conductive and insulating homemade play dough to build simple circuits. Learners then...

    Over $20 per group Ages 8 - 14 1 to 2 hours