Teach quickly. Mathematics is to cultivate people's logical thinking ability. Missed the golden age of 3 to 10. It's no use asking a tutor to make up lessons in the future. My colleague's children are like this. My colleague thinks that it doesn't matter if the child is young. I didn't ask a tutor to make up lessons until junior high school started. It turned out that it was too late and the thinking ability was too poor. I can't correct it. Another colleague's child is just the opposite. When I was a child, I grasped it tightly and developed my thinking ability. Even if he is the only one left in junior high school, he is crazy in the first and second days of junior high school, and he still goes to the key middle school for quick classes in the third day.