2. Give it a try: help digest what you have learned and achieve mastery. I often deduce the formula that the teacher said after class. Don't read, recite. In this way, I can master the formula thoroughly and lay a solid foundation for the deformation calculation of the formula.
3. Cultivate the spirit of creativity: The so-called creativity means thinking of new methods, making new achievements and establishing new theories. Creation is not limited to the methods and textbooks taught by teachers. Usually, there are some thorny problems. After I understand the method taught by the teacher, I have to find out if there are other solutions. This will deepen my understanding of the problem, compare the advantages and disadvantages of several solutions, and make the problem-solving thinking reach a higher level.