1. preview-go and see for yourself before class to know what the teacher is going to say.
2. Listen attentively-never ignore the teacher's explanation in order to take notes.
3. After-class exercises-first review what the teacher said, understand the examples, remember the formulas and theorems, and then do the exercises. Remember to turn over the books before doing the exercises!
4. Exam-read a book before the exam, read the wrong question book, sort out the knowledge points, and do appropriate calculation training.
5. Error detection and reinforcement-whether you can't make mistakes after analyzing the test paper or you will make mistakes seriously, you must write down the wrong questions, do them again in a day or two, and then consolidate them.
6. Memories-review key knowledge, calculation methods, examples, wrong questions, etc. We learn so that we won't leave a blind spot of knowledge.
You also need to train the speed and accuracy of calculation. Mathematics is a very rigorous subject. We must form the habit of using toilet paper scientifically, not for saving, but mainly for later inspection, so that we can know which step is wrong and check the problem accurately and quickly.
I hope I can help you and wish you success in your studies!