The Inka Quipu: Positional Notation on a Knotted Cord

  • The Inka Quipu: Positional Notation on a Knotted Cord

    Claudia Zaslavsky; Bianka Crespo
    Exploration of the Inka data recording system of knotted cords called quipus reinforces students' understanding of place value. Activity sheets included.