Book (Practical) Education and childcare The ability of the child is decided by 9 years old

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Education and Childcare
There is a "critical period" in the brain. There is intelligence that can only be acquired before the age of nine, and intelligence that can be acquired after the age of nine. By the age of nine, through hands-on learning using five senses, students develop the "six instruments" (multiple intelligence) that form the basis of talent and academic achievement. After the age of nine, students develop the ability to accumulate knowledge (human intelligence) through classroom learning. That's the ideal.