Column

  1. Math

    A Straw and Two Glasses

    Using a straw to transfer water between two glasses raises intriguing mathematical questions. For more math, visit the MathTrek blog.

    By Ivars Peterson
  2. Math

    Möbius at the Shopping Mall

    Möbius strips can show up in the unlikeliest places.

    By Ivars Peterson
  3. Math

    Pentomino Sudoku

    A contest features a combination of sudoku and tiles called pentominoes.

    By Ivars Peterson
  4. Math

    Quilting Pi

    The digits of pi inspire artistic quilts. For more math, visit the MathTrek blog.

    By Ivars Peterson
  5. Math

    Constructing Difference Engines

    Antique calculators resurface as Lego or Meccano models.