Look at the textbook, reposition the understanding, the meaning of each letter, and the conditions for the establishment of the formula.

3 Do examples and read them to ensure that they will be learned (recite them if necessary).

4 do one or two exercises (do more unintentionally, master everything you have seen, and link it with your mood. You can do more when you are in a good mood)

Look at the textbook,

(Textbooks are the most important)

This is my opinion, (if you can read all the examples in the textbook, you can get a high score steadily)