Let's get to know about abacus.
Abacus can be described as the first computer that dates back to 3000 BC with its earliest form consisting of stones placed on a surface of sand. Its name comes from “Abax” in Greek. In today's digital environment, this calculator that doesn't need electricity is the most popular arithmetic tool that is used in children's brain development.
Abacus, which is also known as soroban, consists of beads that slide along rods in a frame and comes in different types. The type that is used in Menar program has five beads on each rod as seen in the picture. The beads that represent numbers in a certain systematic are moved up and down along the rods. This way all kinds of arithmetic calculations can be made very easily and very fast.