The abacus, likely originating from Babylon, is a calculating tool that utilizes sliding beads on rods or wires to represent decimal places. It is considered the precursor to modern digital calculators. Throughout the Middle Ages, merchants in Europe and the Arab world utilized the abacus, but it was gradually replaced by Hindu-Arabic numeral-based arithmetic. Although it has largely fallen out of use in Europe since the 18th century, the abacus remains a valuable tool in the Middle East, China, and Japan.

In MobyMax, the abacus is utilized in our Numbers module to make learning how to compose and decompose numbers both enjoyable and effective for students. Through friendly competition to reach the top level of achievement (Fighting Ninja Panda!), students learn how to perform mental addition and subtraction with large numbers.