We chose to build two abaci from different cultures in order to compare them: the Russian (Schoty) abacus and the Japanese (Soroban) abacus. The Russian abacus was made specifically for counting ...

Nevertheless, the abacus is enjoying a resurgence with parents in the Reiwa Era that started in 2019. At the Takashima Soroban School in the Akabane district of Tokyo’s Kita Ward, students ...