Soroban: Master Japanese Abacus with Strategic Math Challenges

Use Soroban's intuitive interface to slide beads and solve calculations. Begin with basic operations, then progress to timed challenges. Track progress through accuracy metrics. For best results: 1) Practice daily 2) Start with addition/subtraction 3) Use two-handed technique 4) Analyze time vs accuracy ratios. Unlock advanced modes by completing 10 perfect calculations consecutively.