The following words are harmless. If your child is mentally normal, I believe you can judge this. Then poor math is not a question of ignorance, but a question of whether he likes it or not. This should be done slowly. If he is more and more afraid of mathematics, then no matter which expert, I am afraid there is nothing he can do. If you can give him a chance to solve his own problems: for example, the teacher gives him a chance to answer questions (this opportunity should be compatible with his ability to solve problems); When our parents are watching him do the problem, whenever they hesitate, don't worry, give him room to think. Let him build up confidence in solving problems with mathematics. The rest will be easy. Of course, there are also some reasons, such as children's fascination with the internet and games, which is not just a matter of learning math well.