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    Oregon Museum of Science and Industry
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    This simulated balance beam illustrates binary mathematics. You have a set of weights and the goal is to match an unknown weight, but you only have weights that have mass 1, 2, 4, 8, and 16. You...

    free Ages 6 - adult 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    This computer interactive lets you explore the effect of changing the number of colors and resolution of a picture. You can see the picture in high quality (72 dots per inch), low quality (10 dpi),...

    free Ages 6 - adult Under 5 minutes
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    National Park Service
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    In this online interactive, learners first explore the great American inventors and their inventions as well as the role of the National Park Service. Then, learners investigate how Edison's...

    free Ages 4 - 14 5 to 10 minutes
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    National Geographic Society
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    In this activity, learners discover that training a robot can be hard work! Learners investigate how robots complete a task by following a list of sequential instructions. Learners write algorithms...

    free Ages 6 - 14 30 to 45 minutes
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    National Geographic Society
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    In this activity, learners explore the parts of a circuit by modeling, as a group, a “human” circuit. Learners investigate the conditions necessary for a circuit to work and model open and closed...

    free Ages 6 - 11 10 to 30 minutes
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    Twin Cities Public Television
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    Can you distinguish lion tracks from chimpanzee tracks? This online Flash version of the classic match game hones learners' thinking skills with diverse science topics like technology, biology...

    free Ages 6 - 14 5 to 10 minutes

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