First of all, we should be clear about the purpose of our review: mathematics is not like a general subject, and there are not many things to remember. The key is understanding. Therefore, the key to review is not to memorize, but to dredge understanding. Review the formulas and knowledge points that have been understood before as soon as possible. This is mainly to consolidate the knowledge you have mastered. Another purpose of review is to conquer the knowledge that you didn't understand or didn't fully understand for the first time (such as in class). Another task of review is to check and fill in the gaps, and pay attention to some missing knowledge points (generally few). Regarding the review methods, I saw that some netizens summed it up very well: the commonly used review methods are:

(1) Try to remember. That is, when reviewing, first recall what the teacher said in your mind, then open a book or notebook for comparison, and then review the knowledge that is vague or can't be recalled at all. This can not only strengthen your memory, but also gradually develop the habit of positive thinking;

(2) Key points method. That is, in the review process, seek the main points of knowledge points, and grasp the main points to grasp the trunk of the problem. For example, when reviewing a text, you can use eye-catching colors to mark keywords, key sentences in each paragraph and transitional sentences connecting the preceding with the following, so that these words can be used as the support points of memory, and grasping a few keywords will also grasp the content of the whole text;

(3) Comparative method. That is, find out the characteristics and similarities of knowledge in various subjects, and strengthen the review effect by seeking differences in similarities or seeking common ground in differences;

(4) Summary method. That is, find out the internal relations of all kinds of knowledge, and then concentrate the knowledge to remember.

It should be reminded that mathematics must attach importance to the foundation, because mathematics is a discipline with closely related knowledge points, and these knowledge are all based on the same foundation. Only by firmly grasping the foundation can we be comfortable with its superstructure.