Soroban vs Suanpan vs Schoty: Which Abacus Should a Child Learn?

"Abacus" is one word for several quite different instruments. If you are buying one, choosing a class or picking an app, it helps to know which kind you are looking at — because the design decides how easy it is for a child to learn and, later, to picture in their head.

The three you will meet

Soroban (Japan)

One bead above the beam worth 5, four beads below worth 1 each, on every rod. That is exactly enough to show every digit 0–9 once, with no leftover beads. Clean, decimal, unambiguous.

500

50

5

100Hundreds

10Tens

1Ones

7

Suanpan (China)

Two beads above the beam and five below. The extra beads let a rod show up to 15, which was useful for old weight and money systems based on 16, and for some traditional division methods. For base-10 arithmetic it means a digit can be shown two ways, which is confusing for a beginner.

Schoty (Russia)

Ten beads on horizontal wires, no beam. You slide beads across to count. It is essentially counting on fingers with more fingers — good for tallying, but there is no 5-bead, so the complement formulas that make the soroban fast do not exist on it.

Why the soroban is the one for children

Almost every abacus programme for kids — coaching centres, competitions and Abacus Kids — uses the soroban, for four reasons:

• One way to show each digit. A child never has to decide between two valid bead patterns. 7 is always heaven-down plus two earth beads.
• The 5-bead makes the formulas. The whole Small Friend system depends on having exactly one bead worth 5. The soroban is built around it.
• It matches written numbers. One rod, one digit. Reading a soroban is reading a number.
• It is easier to imagine. Fewer beads per rod means a simpler picture to hold in the mind. Anzan is far more common among soroban learners for exactly this reason.

7 rods or 13 rods?

Sorobans come in different lengths, and Abacus Kids offers two in Settings:

• 7 rods shows whole numbers up to 9,999,999. It fits comfortably on a phone screen and is the default for younger children — fewer rods, less to look at.
• 13 rods adds decimal places to the right of the ones rod, so children can work with money, measurements and decimals. The extra rods also give room for longer multiplication and division.

Neither is "more correct". Start with 7. Move to 13 when decimals appear in schoolwork or when your child is doing multi-digit multiplication in the higher Abacus Practice levels.

A note on "mental abacus" and "Vedic math"

You may see mental arithmetic systems that borrow the word abacus but use no beads, or Vedic math methods that teach shortcut tricks for particular calculations. These can be effective, but they are a different thing. The soroban method is one system that handles every addition and subtraction with two rules, and it produces a mental picture a child can rely on for any numbers. Tricks are fast for the cases they cover and useless outside them. If you want a general skill, learn the general method.

What this means for you

• Choosing an app or class: check that it uses a 1:4 soroban and teaches Small Friend and Big Friend formulas — here is how to compare classes and apps. If it does, the method is the standard one.
• Buying a frame: look for 1:4, and don't worry about brand. A plain wooden soroban is perfect.
• Rod count: 7 to start, 13 when decimals arrive.