"Flash Anzan" is an advanced exercise where numbers appear in quick succession on screen, and the learner adds them mentally by visualizing the bead movements on the soroban.
Why is it effective?
It forces the brain to process numbers quickly via the mental image of the abacus, developing calculation speed, focus and working memory.
How to train?
- Master operations on a real abacus first.
- Start with few numbers at low speed, then increase gradually.
- Train daily for a short time to anchor the mental image.
Build your foundation with addition and subtraction, then test your speed in practice.