Children's abacus

Children's abacus

— toys that work on the principle of classical arithmetic accounts and have, most often, a similar design — several horizontal axes, on which “knuckles” are fixed that can slide along the axis. The main function of such toys is clear already from the name — this is teaching arithmetic in a playful way. At the same time, children's abacus, unlike adults, often have knuckles of different colours — this also contributes to the development of colour perception.