Resources and Tools for Elementary Math Specialists and Teachers
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      Many uses
      By Uncle Bob on 08/21/2012 - 14:39
    • Although the supporting material is a little light, there are links that take one to deeper discussions. Modular arithmetic has vital applications in cryptology (online commerce, nat'l security). The fact the the 'clock' can go to mod 26 brings many applications into play - base ten, remainders, multiples and division, military time and the alphabet come immediately to mind.