For the study of mathematics, it is very necessary to do a lot of problems. We need to know a truth: the results of mathematics are obtained by a lot of practice, but the correct method of doing problems will really have an effect. Be sure to choose the topics carefully and sum up the rules after you finish. It is best to copy down the wrong questions for final consolidation.

Many people are crazy to do more problems in the wrong way. After making a mistake, take another look at the correct answer and continue to brush the questions. This is not obvious, because it is not correcting mistakes, but changing the answer again, and there is no real intention of thinking and reflection. The next time you encounter a similar problem or even the original question, you may still make a mistake, so brushing a big question will have no effect.