According to the analysis on the development of nerve tissues, the development and growth of the nerve tissues begin in 4 to 6 years old children at a rapid speed, and the progress will slow down and growth reaches 75%. The greatest growth of human brain is during 6 to 14 years and during this period, the frequency of the brain wave increases gradually from theta (relaxing stage) to alpha level ( relax but conscious ).
Children in alpha level have plentiful imagination and quicker learning ability. As they grow into their juvenile (the beta level, the sober period), through will become more rational and they mainly think with left brain.
Therefore, as a parent to your child, in order to explore and enhance the children's intelligence, the best learning time for your child's is the age before 15 years.