It is normal for some children to develop slowly, and the way you may teach them is not suitable for them. In school, the teacher's explanation is relatively easy to understand, and the children can know a little more or less. Mathematics in interest classes suggests that your son should think according to his grades and performance in the second and third grades of primary school. It will greatly reduce his interest in learning to enroll in mathematics interest classes in preschool classes.

Before that, you might as well test him with some practical problems in games and life, and insert math problems into his favorite games, and the learning quality will gradually improve.

Education can't be completed at once, so it's most important for you to be patient, let your children get in touch with real life as soon as possible and be open-minded. Some famous scientists among financial economists or celebrities who have made outstanding achievements in various fields are not particularly smart when they are young. So I suggest you don't worry too early. Let him learn manners, form good habits and develop a lively and cheerful personality, which is the most important thing. IQ does not necessarily affect his life, but habits and upbringing are the peak of everything.