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    Lawrence Hall of Science
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    In this online math activity, learners can quickly discover the nanometer equivalent for inches, feet and miles and/or millimeters, centimeters and meters. The learner punches in a number on the ...

    free Ages 6 - adult 5 to 10 minutes
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    Lawrence Hall of Science
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    In this online quiz, learners listen to whale songs, then try to guess whether the song comes from an orca, humpback, pilot, or sperm whale. Learners also guess which of four oscilloscope patterns...

    free Ages 8 - adult 5 to 10 minutes

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