20 counting chain red/white | RE-Plastic® Learn math counting chain school

Arithmetic chain (approx. 45 cm) with 20 balls, which are threaded in steps of 5 on a tear-resistant, stretchy cord. The balls are made of RE-Plastic® and have a diameter of 10 mm. When the string is pulled, the slight ball lock is released and all the beads slip together again. Since the balls have the exact diameter of 1 cm, they are also suitable for calculating and measuring. Packed in RE-Plastic® bag. - Helps with the transition from calculating with fingers to abstract arithmetic, adding numbers in the number range up to 20 (plus calculation) and subtracting (minus calculation). - Count forwards and backwards from 1 to 20, capture quantities at a glance, break down quantities (7 breaks down into e.g. 5 and 2) - count in steps (e.g. 2, 4, 6, ... or 17, 15, 13, ...), even or odd numbers, neighboring numbers, multiplication / division (doubling / halving) - RE-Plastic® is 100% post-consumer recycled plastic that is 100% recyclable over and over again. - Manufactured in Bensheim/Hesse/Germany.