First and foremost, abacus or also known as Suan Pan (算盘) is an ancient tool where mathematical calculation can be done. It consists of beads, which are movable, on rods or grooves. Addition, subtraction, multiplication, division, square root and cube root can be calculate on abacus.
The best learning age for children: 4-12 years old
According to the analysis on the development of nervous tissues, the development and growth of the nerves will begin from age 4 to 6 years old with a quickest speed, the progression will slow down after 12 years old when growth reach to 75%.
It is believed that 4-7 years is the best age when a child can start learning any new concept and it is the age when grasping power of the brain is excellent and you can remember things for a longer period of time.
Brain
We are born with more than 100 billion brain cells or neurons; we will not grow more.
Most of the brain’s cells are formed before birth, but most of the connections among cells are made during infancy and early childhood.
Abacus & Senses
The use of abacus requires coordination of sight, sound and finger movements which induces increase in the synaptic connections. The abacus learner tries to coordinate visual, auditory and sensory inputs, analyses the problems and solves them.
The “prime time” for visual and auditory development, or a child’s capacity for learning to see and hear, is from birth to between 4 and 5 years old.
Abacus & Brain

Abacus coordinates right and left hemispheres to solve problems.
Left Brain – problem solving, logic
Right Brain – visual learning, imaginary
Benefits of Abacus Training
1. Improve in cognitive capacity
– Improvement in visuo-spatial and verbal working memory (Bhaskaran et al., 2006)
2. Improve concentration
3. Boost confidence in children
4. Increase interest in Maths
How to market Abacus Program
1. Not emphasize too much on using the abacus for speed or competition
2. Focus on other benefits listed above
3. Can have FAQ stating questions like, the difference between abacus math and school math etc.
Can have a look at this:
https://online-soroban.com/blog/japanese-abacus-online-and-how-to-learn-at-home.html