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The calculator is a very common instrument for computing numbers in the world today. However, learning how to compute numbers mentally is still very important. This is especially true for children ages 6 to 15. Parents should not miss the window of opportunity to introduce their children to mental arithmetic. Mental arithmetic promotes the overall abilities of the brain.

Approximately 88% of the world population is right-handed. Right-handed people have more developed left brain hemispheres and less developed right brain hemispheres. Medical experts indicate that the creative ability of the right brain is almost a million times that of the left brain. Computers, calculators, robots, and other business machines were all invented to facilitate the function of the left brain. There is no substitute for the right brain, and the abilily of the right brain is the determining factor for a person to excel in studying and career development.

From birth to the age of eighteen, brain development is at its greatest. During this period, a child will invariably become brighter if ample simulation has been given to both sides of his/her brain. One of the most direct and effective practices used in mental arithmetic is the utilization of both hands. The right hemisphere of the brain commands the motion of the left hand, and the left hemisphere of the brain commands the right hand. The movement of the two hands represents one third of total brain activity.

American children also learn J.S.U.M.A.

Conventional mental arithmetic techniques require children to spend a long period of time learning the abacus. As a result, only the left hemisphere of the brain is stimulated and the right half of the brain is ignored.

However, J.S.U. MENTAL ARITHMETIC does not teach children how to use an abacus. Children are taught how to use their ten fingers. Special emphasis is placed on the movement of the left hand in order to stimulate the activities of the right hemisphere of the brain. Later on, children will be introduced to abstract mental arithmetic via paper teaching aids. J.S.U. MENTAL ARITHMETIC designed both the teaching technique and teaching materials to follow the principal of stimulating the right hemisphere of the brain.

Mental calculation is only one of the many benefits that J.S.U. MENTAL ARITHMETIC provides. It also helps children increase their concentration level, memory power, creativity, reasoning, imagination, organizational skill, and overall development.

J.S.U. MENTAL ARITHMETIC has been enjoyed and welcomed by children from Taiwan, Singapore, Malaysia, the United States of America, Canada, and Australia in recent years. Last year the tour into Beijing, Shanghai, Wu-Han, Xan Young, and Guan Chou was very well received and welcomed, too. We hope that your child will also benefit from J.S.U. MENTAL ARITHMETIC.


The article above is originally from the headquarters' website at


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last update 6-24-2014