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 ！.

A network of full contact karate dojos in Japan and abroad. In the Bay Area, there are two locations in San Francisco ・ and San Mateo. With the motto "From Bu to Toku", we have a wide range of students from children to adults, both experienced and inexperienced, of all genders. Observation ・ Please feel free to contact us if you would like to experience the class.