Memorizing formulas and theorems, writing a few questions, figuring out how to do a certain kind of questions and looking at the answers are also good ways to understand and apply what you have learned. As for physics, in fact, as long as you listen to lectures more, you can understand that physics in junior high school is just a grasping hand and does not need the support of mathematics. But in high school, you need to study hard at math. Oil; Fuel filling; Make greater efforts