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    Computer Science Unplugged
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    This magic trick is based on how computers detect and correct data errors. In the trick, a volunteer lays out a 5 x 5 square of identical cards colored on one side, with a random mix of sides...

    1 cent - $1 per group Ages 8 - adult 30 to 45 minutes
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    Computer Science Unplugged
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    This activity helps students learn how computers "compress" text by identifying repeating patterns of letters, words, and phrases. Students use poems or nursery rhymes as their source...

    1 cent - $1 per student Ages 8 - adult 30 to 45 minutes

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