Leco Mas is a mental arithmetic education program for children aged 4 to 12 years.

The program begins with an introduction to the Japanese abacus (Soroban) and instructions on how to use it.

• Semester 1: Teaching addition and subtraction of numbers from 0 to 9
• Semester 2: Introduction to mental arithmetic, which is a key component of visual intelligence. Practicing mental arithmetic positively impacts the child’s academic performance and daily life.

This program also helps children understand mathematical concepts and improves their calculation skills.