Generally speaking, 70% of the knowledge difficulty of junior high school mathematics investigation is basic knowledge, so if you can learn the basic knowledge thoroughly, it is no problem to get upper-middle grades in mathematics. In particular, some junior two students with poor mathematical foundation can take more time to recite some basic concepts, formulas and some typical examples on the basis of understanding, and lay a solid foundation, so they will naturally be solved in the face of various types of exercises.

Several small methods to learn mathematics well

1, establish a mathematical error correction book. When you make mistakes in your homework or review, once you understand them, you must never let them go. In order to reduce repetitive mistakes, I am not afraid of not making mistakes the first time, but I am afraid of making the same mistakes next time. Write down error-prone knowledge or reasoning in case of making mistakes again.

Strive to find wrong mistakes, analyze them, correct them and prevent them. Literacy: We should set a set of wrong questions for the wrong questions in homework, extracurricular exercises and exams. The wrong question set consists of five contents: wrong questions, wrong reasons, error correction measures, error correction and consolidation.

2. Memorize mathematical laws and conclusions.

3. Establish a good relationship with classmates, strive to be a "little teacher" and form a "mutual aid group" for math learning. Look at other students' papers, learn their excellent methods and absorb their mistakes.

4, often carry out one problem with multiple solutions, one problem is changeable, think about the problem from many sides and angles, and dig the essence of the problem. Find the best learning method according to your own characteristics.