Which abacus rules does your child really know?
The Bead Checkup tests every soroban bead rule — small friends, big friends, and combined moves — one engineered question at a time on a virtual abacus, and shows exactly which rules are solid and which need practice.
Real bead work
Every answer happens on the abacus itself — no multiple choice, no typing. The check sees the actual bead moves.
Knows WHY it was wrong
A wrong answer isn't just wrong — the check recognizes the exact slip, like forgetting the heaven bead or missing the carry, and gives a gentle hint.
A report you can act on
Rule-by-rule verdicts with the formula for each one, plus a one-tap practice drill for whatever needs work.
Three steps, no account
The check adapts as it goes — a missed rule gets a hint and a couple of gentle retries before moving on.
- 1Enter a first nameThat's all we ask. Pick a quick check (~16 questions) or the full one (~34).
- 2Answer on the abacusEach question starts from a set position and tests exactly one rule — direct moves, then small friends, big friends, and combined.
- 3Get the rule reportSee mastered rules, shaky ones, and the ones to practice — with a drill link that targets them directly.
Take the Bead Checkup
Runs right here in the page. Best with a mouse or touchscreen the child can move beads on.
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The abacus is waiting
About 5–8 minutes for the quick check. You'll get the full rule report at the end — nothing to install, nothing to sign up for.