Of course, a math teacher should not think that many of his students will become mathematicians in the future. Mathematics is not only a skill to earn a living, but also a stepping stone to a higher school. However, from this subject, we can see how human beings solve many problems they face, how many mathematical theorems and theories have been formed from specific problems ... People used to study specific mathematical problems not only for specific purposes, but also for the pursuit of profound truth and how to create a beautiful world. This is creation. We often say that we should cultivate "ability". In fact, where there is no "abstract ability", it is as good as talking about swimming without creative practice. A teenager may be creating by solving a simple math problem, but Jin Fan won sixty strokes, and even if he won the first prize, he didn't create anything, nor did he have any ability. Of course, writing eight-part essay is also a kind of "ability"! The problem is not to learn advanced mathematics or elementary mathematics, but how to treat the knowledge that children can accept. This is an attitude problem. I don't believe there is any fixed method here, let alone any tricks. We can see that almost everyone who has a successful career is influenced by one or two middle school teachers, and the most profound influence of this teacher lies not only in his specific knowledge, but also in his sentiment, his attitude towards science and so on, that is, his own scientific literacy.