Abacus training help utilizing both sides of the brain
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Recent studies have shown that the abacus method of mental calculation is effective in the development of the right brain. At first, this idea was only a hypothesis, but the recent development of high-tech machinery has helped provide tangible research data. In this section, we will present information provided by researchers who study the effects of abacus training.
Read more here: http://www.shuzan.jp/english/brain/brain.html