Then we need to know the difference between "understanding" and "knowing".
What is understanding? Understanding refers to being able to understand what the teacher said, to know the logical relationship between the contents, and to remember the results obtained in the thinking process of the teacher or book.
But "understanding" does not necessarily mean a thorough understanding of methods and knowledge, but only when explaining to others, what you can recall is what you heard.
However, the level of "meeting" is higher, and "meeting" requires students to think and analyze problems independently, make creative associations, and connect the problems to be solved with the knowledge they have learned before.
Because the requirement of "understanding" is far lower than the requirement of "meeting" and reaches the standard of "understanding", but it is not necessarily. In many cases, students really understand in class. If you ask him to repeat the knowledge or method, he will have no problem and can repeat it quickly. However, the level of "meeting" is not so simple. First of all, the premise is that you must remember, master and be familiar with it first, and then solve the problem pertinently through the formed knowledge structure.
So how to deal with the relationship between knowing and meeting? Understanding in class is definitely the first requirement. If you don't understand, let alone talk about "meeting".
Therefore, the first step is to understand in class. Step two, don't think that you are great after you understand it. Don't think that you already know it. You should think about what kind of logical relationship between what you know. Then, after this logical relationship is established, can you try to solve the problem with it? You may stumble in the early stage, but you will get better after you get familiar with it. You must take this step to reach the meeting.