MATH EXCERCISES BOOKS BY SOROBAN SENSEI
Make a difference 5min per day
We made mathematical workbooks for our students.
From simple addition to algebra of fractions, total 30 books.
It's a concise and effective structure created by a number-learning professional, and a five-minute-a-day study routine can be an important foundation for self-study.
You don't have to use the Soroban method of mental arithmetic.
Begin with easy level. One sheet or two sheets per day. The time limit is 5 minutes. If it takes longer than 5 minutes, better to try it again.
It is designed for Japanese students. but number are a UNIVERSAL LAUNGUAGES!!!