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    National Center for Women and Information Technology (NCWIT)
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    In this computer science activity about finite-state automaton (on page 45 of the PDF), learners use a map and choose various pathways to find Treasure Island. They learn that different pathways...

    1 cent - $1 per student Ages 8 - 14 45 to 60 minutes
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    American Association for the Advancement of Science
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    In this online activity, learners see simulations of how processes shape the Earth, and see estimates of how long these processes take. Learners see a before picture and after picture and need to...

    free Ages 8 - 11 5 to 10 minutes