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    PhET
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    In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget....

    free Ages 8 - adult 10 to 30 minutes
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    NISE Network
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    This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures. IR technology, like the IR thermometer in this activity, uses the infrared light...

    Over $20 per group Ages 4 - adult 5 to 10 minutes