Bit depth: A 17-bit abacus is best suited for classes because it provides greater convenience for calculations.

How to choose a suitable abacus for lessons?

Color: Choose an abacus with plain bones to avoid confusion caused by merging colors.

Bone size: Standard-sized bones are 1.5 cm long and 0.8 cm wide. Most abacuses sold in stores have standard-sized bones, so don't focus too much on this factor.

Zero button: This is a new feature in the world of abacuses. It is used to reset the answer quickly. While it can help to achieve speed, it is not necessary for learning, so the choice is yours."

What is an abacus?

An abacus is a special tool used for practicing mental arithmetic. It is the primary mechanism for mastering mental arithmetic. Historians believe that the first abacus appeared in Mesopotamia during the third millennium BC. People invented this tool as a natural method for calculating household expenses quickly and conveniently. With the help of an abacus, you can perform mathematical operations more efficiently.

Where abacus can be bought?

The abacus, also known as soroban or suanpan, consists of an odd number of vertically arranged needles called "heavenly bones" and "earth bones." The needles are separated by a long crossbar, and the number of spokes varies from 5 to 31, although 13, 17, and 21 spokes are more common. A greater number of spokes allow for calculations involving larger numbers. Each needle has five bones: one above the crossbar and four below it.

What does an abacus look like?