In primary school, doing more questions, arcane is the best, can develop brain thinking. When I was a child, the teacher just asked us to do Olympic math problems, do some test papers, and then recite concepts. Listen carefully in class, go home at night, do your homework first and relax. You can ask him to do three or four Olympic math problems. Parents can watch, don't bother him, ask some questions and guide him to do it slowly. Don't let him know the answer directly, let him do it himself. On weekends, you can make a test paper according to the above method. Don't hold on too tightly, but lay a solid foundation. I'm in Grade Two now, and I'm the representative of the math class in my class. However, when I was a child, my classmates who had a good foundation in Grade One, Grade Two and Grade Three were all in the top five. I just didn't lay a good foundation in primary school, so I have to do more questions now.