To acquire the ability to calculate rapidly and accurately and to calculate mentally
Based on the results mentioned above, some advantages and characteristics  of abacus learning are revealed. One of the advantages of abacus study is that learners can  calculate simple mathematical problems rapidly and accurately. In addition, they acquire the ability of do mental calculation utilizing the abacus image, which allows quick calculation without actually using the abacus.
These characteristics show positive ripple effects on the solution of  various mathematical problems. On the other hand, the learners'  calculation  methods  become  fixed,  nd the students tend to lack flexibility in thinking out innovative ways to solve problems.It goes without saying that spending time on thinking out new ways to solve problems  (such as thinking about the meaning of the  calculation or coming up with other ways  to  solve  the problem) can be negative in terms of the amount of time needed to solve problems when the primary goal is rapid and accurate calculation.

At the beginning of the new century
I am currently considering  adapting  the  principles of the abacus to computer software that teaches the concepts of digit position (meaning of zeros in numbers)  to  mentally challenged children. I have been trying to teach numbers and simple calculations  to these children. They have great difficulty in understanding the concept of digit position, even though  they  could  read and write numbers and do addition and subtraction of one-to two-digit numbers. In  order  to  make  learning fun, I have used an activity in which children  carry  a  certain  amount  of  money  and  go  to  their  favorite store to buy something they like. However,  the  distinction  between  13  yen  and  130 yen was hard for them to grasp. I  think  the  following   reasoning  could  be  used  to  provide  a more  easily  comprehended explanation  of  the  concept  for  them. On the abacus  board, there can only be up to 9 in the units position.  If 1  is  added  to 9,  there will be a number  in the 10s position and nothing, or zero, in the units column.

Development of human brain
What is the structure of our brain like? How does the brain develop? Cerebral physiology has seen great developments. However, there still is much that is unknown about our brain. Our brain is truly amazing. What we know up to this point includes that the human brain is created at an early stage of embryo development and that cerebral nerve cells are already made by the time of birth. Within the brain, the brain stem (all living animals have it, and it controls the functions necessary for survival such as the functions of the heart and internal organs) and the cerebral archicortex (which controls basic instincts such as appetite, sexual desire, sleep, desire to belong to a group, and emotions such as pleasant and unpleasant feelings, fear, anger,etc) are basically completed while in the womb.
On the other hand, among animals of higher order, humans have the highly developed cerebral neocortex that can create nerve cells (some say there are 14 billion nerve cells!). This cerebral neocortex does notcortex. This is when the activation of the brain improves and the systems to process information in the neocortex are most efficiently completed. On the other hand, if the information or stimuli are perceived as gunpleasant h, the activation of the brain does not occur and the neocortex is suppressed to grow any further.

Move the fingers and talk in a loud voice
What does the  activation  of the  nerve cells in the neocortex mean?  Nerve cells in the  neocortex consist of 14 billion sets  of motor  nerves  and sensory  nerves.  These  sets  create  the  network (synapses) in which they contact each other and make up a living nervous system.The importance lies in how many sets of nerve cells we can activate in our lives. We can  activate  the  nerve  cells by providing gstimuli h. Moving fingers and talking aloud lead to activation  by providing appropriate stimuli  in  the  large  part  of  sensory  to  motor  domains in the cerebral neocortex.In this sense, starting abacus learning  as  young  as possible is useful in activating the brains of young children. However, if children learn  to  use  the  abacus  without  wanting  to  do  it, there will be no positive effects. If they come to like learning the abacus and  move  the beads on the abacus with fun, they will receive benefits from this experience. There  is  a  key in making abacus-learning fun for young children so that they will grow to like it.

Development of the right brain by the abacus method of mental calculation
The human brain consists of the  right  brain  and the left  brain. The shapes of these two parts are similar, but differences have been gradually found in their functions. The left brain is also referred to as the digital brain. It controls reading and  writing, calculation, and logical thinking. The right brain is  referred  to  as  the  analog  brain.  It  controls  three-dimensional  sense, creativity, and artistic senses. These two work together to allow us to function as humans. The  Japanese are thought to speak Japanese  with  their  left  brain,  and  this  allows their left brain to be more efficient. On the other hand, westerners also utilize  their right  brain to  learn their languages, so their right brain is usually more efficient.  It  is  natural  that  young  Japanese  students  are  better  at mathematical calculation than students  in  western  countries  who  are  the  same  age.  It  is also natural that, because of the better development  in  their  right  brain,  students  in  western  countries are more creative and original than Japll learners  the  abacus  method  of mental calculation, no matter how briefly it may be. I consider the completion of abacus learning the mastery of the mental calculation.

Shining brain
Having  grown  up  to  be  workers  in  various  work  places  and  providers  for  their  families  and contributors  to  society,  many  people retire from the forefront of the society and start the second stage of their lives. For these people, it is very important to live ample and healthy lives. In order to achieve this  way  of  living,  they  have  to  remember  to activate their brain as much as possible. There are many  different  ways  to  activate  the  brain,  and  one  of  them  is  the calculation with the abacus. In the abacus method of calculation, the abacus  is  not only the best way to exercise fingertips, but also positively influences the right brain to be  activated. Although it may take a little more time than for younger people, activation in the  cerebral nerve cells certainly does occur even
at the age of a hundred. In this case also, they  have to  come to like the  abacus first. Throughout the lifetime there is truth in the saying that you do well  at  what  you  like. A  gmaster of life h is a person who has a cooperation of
comprehension only