Created by Charles Hartenstein, this toy explains one of the most fundamental principles of math, the Pythagorean Theorem, using marbles [source: https://t.co/QNWPxu3Sy1] pic.twitter.com/2LsGaZrAyi— Massimo (@Rainmaker1973) November 7, 2019
Created by Charles Hartenstein, this toy explains one of the most fundamental principles of math, the Pythagorean Theorem, using marbles [source: https://t.co/QNWPxu3Sy1] pic.twitter.com/2LsGaZrAyi