Column

  1. Math

    Coins in a Row

    A simple game involving coins in a row has unexpected complexities.

    By Ivars Peterson
  2. Math

    Works in Progress

    Studying math in school doesn't often give you a sense of what mathematical research is about.

    By Ivars Peterson
  3. Math

    Classroom Birthdays

    What's the probability of finding matching birthdays in a small group?

    By Ivars Peterson
  4. Math

    Captcha the Puzzle

    A computer creates a test that it can't pass but most people can.

    By Ivars Peterson
  5. Math

    Sosa’s Corked Bat

    Does Sammy Sosa's hitting reveal a corked-bat effect?

    By Ivars Peterson
  6. Math

    Sea Shell Spirals

    The golden ratio doesn't figure into the spiral structure of the chambered nautilus shell.