Vivinavi

A life-changing mental arithmetic program based on the traditional abacus. It improves mental arithmetic, memory, concentration, and self-confidence, and dramatically improves mathematical calculation skills. Ensures that you develop your mental arithmetic, calculation, and mathematical computation skills This program has been around since 1979 and has helped many students grow over the decades Over 40 years of history and trust to help you learn ！.

計算力を鍛えるそろばん・アバカスクラスを1979年から開校しています！オンラインでも学べるから、自宅で効率よく計算スキルを磨けます。お子さまの学力向上や暗算力アップに最適なプログラムです！ 学校の成績向上、自己肯定感を育む、簡単に学べる数学 暗算力 - 計算力 - 電卓なし - 正確さ - 即時解答 - SAT試験対策