Remember the knowledge points and formulas in each chapter, and it is best to remember a few corresponding examples, so that when you look back, it is very easy to accept and suitable for review.

Moreover, in mathematics learning, you will always come into contact with some, such as the application of new formulas, or some formulas outside the outline, and your knowledge will be supplemented. Finally, you just need to review it with your notebook, and soon,

Or you can refer to those pocket books sold in bookstores now. The formulas and knowledge points are relatively simple and clear.