This app is designed for serious practice of abacus calculation and mental abacus. It offers automatic scoring and re-presents incorrect problems for efficient learning. Practice with problems used by over 100 million people, covering all levels from beginner to advanced.
もじつなぐ:認知症 発達障害の方の脳トレゲーム 集中力向上 by ryo muranaka
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📚 Education
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