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    American Association for the Advancement of Science
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    Whether it's the genetic code, an ancient language, or patterns of light in a distant galaxy, scientists often have to play the role of decoder. In this activity, learners create a code to...

    1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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    The Exploratorium
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    This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document. The lesson...

    1 cent - $1 per group Ages 8 - adult 2 to 4 hours
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    WNET
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    In this Cyberchase activity, learners make decoders to send and receive secret messages. Learners make the device out of two 8-ounce cups and two code strips. Then, they use it to decode Hacker&...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    In this activity about encryption, learners cut out a secret decoder badge from a handout and use it to encode messages to each other. They can also create their own codes that are different from...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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    WGBH
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    In this activity, learners use a soda can to decode a secret message. Learners wrap scytale (pronounced ski-tally) code around a can and challenge friends to see if they can crack the codes....

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes