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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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    University of Nebraska State Museum
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    In this activity (on pages 34-39), learners make a fairly detailed model of DNA using licorice and gumdrops. The sugar and phosphate backbone of DNA is represented by alternating red and black...

    $1 - $5 per group Ages 8 - 14 45 to 60 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 Center for Women and Information Technology (NCWIT)
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    Computers store drawings, photographs, and other pictures using only numbers. Through this activity, learners decode numbers to create pictures using the same process that computers use. They can...

    1 cent - $1 per student Ages 8 - 14 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution. The iodine stains the paper blue, but the...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, "write" a secret message in genetic code as beads on a string. Learners use an amino acid codon table to determine the DNA sequences that correspond to the one-letter...

    $1 - $5 per student Ages 11 - 18 30 to 45 minutes
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    American Museum of Natural History
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    In this activity, learners work in partners to create and exchange messages written in Braille. Learners use a Braille key and thumbtacks to write their messages in Braille. This activity will...

    free Ages 8 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    In this outdoor, night-time activity, learners discover how to spot eye-shine (reflection of light from an animal's eyes) by using a flashlight to play a simulation game. Using the spotting...

    $10 - $20 per group Ages 8 - 18 1 to 2 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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    National Postal Museum
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    In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail. Hints within the activity help learners understand how the code...

    free Ages 8 - 14 5 to 10 minutes

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