Ideal as a counting aid. The counting and calculation frame Abaco has a side length of 22 cm and features red and blue beads with printed numbers. The numbers simplify many exercises and additionally expand the usage possibilities of the calculating device. With a small hand movement, the beads can be flipped over, revealing the gray underside and making the beads invisible. Therefore, only the beads and numbers needed for the respective calculations are visible.

How is the counting and calculation frame Abaco used in the classroom? The calculating device is an ideal and versatile tool in mathematics education. Your students can independently perform and subsequently check the following calculations: discover patterns and regularities, find numbers on the hundred chart, name the predecessor and successor of a number, conduct number dictations, solve and check calculations, and play dice games with ten and one dice.