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    Oregon Museum of Science and Industry
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    This is an online activity where learners can virtually mix different colors of light or paint (you can switch between them) and see how the colors combine. It demonstrates how millions of colors...

    free Ages 6 - adult 5 to 10 minutes
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    Science Museum of Minnesota
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    This online activity lets learners explore how computer programs called "CAPTCHAS" work to test whether you are a human or a computer. Learners will be tested with a series of visual...

    free Ages 6 - adult 5 to 10 minutes
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    Science Museum of Minnesota
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    This online activity lets learners discover to what extent they notice changes to an online image. The activity has two parts. In part one, learners look at a scene and try to notice what happens...

    free Ages 6 - adult 5 to 10 minutes