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  • deck

    Feb 09, 2015 544 0

  • deck

    Sep 08, 2014 513 0

  • computational thinking

    Show and tell: Share an interesting application of computation thinking in real life

    Aug 24, 2014 754 0

  • deck

    Oct 21, 2013 882 0

  • deck

    Oct 16, 2013 952 0

  • deck

    Sep 30, 2013 574 0

  • From Caesar to Modern CryptographyFrom Caesar to Modern Cryptography

    Aug 29, 2013 1,791 1

  • cbis

    Feb 15, 2013 915 0