Kids Up Soroban is the best educational program for children from 4 -12 years old today. Kids Up Soroban applies modern artificial intelligence (AI) technology to bring a completely new math learning method, which has been applied in advanced countries in the world such as Japan, Singapore, Korea, China. National... and has created many rare world records in mental arithmetic. For Kids Up Soroban, with just 20 minutes a day, children will master the method of super-speed calculation, unlimited