1. Consolidate basic knowledge: First of all, it takes some time and energy to review and consolidate the basic knowledge of junior high school mathematics, such as algebra, geometry, probability and so on. You can find a suitable reference book or textbook and study and practice the related basic topics again. Only by mastering the basic knowledge can we better understand and solve more complicated problems.

2. Do more exercises: Mathematics is a subject that needs a lot of practice. Doing problems can deepen the understanding and memory of knowledge points and improve the proficiency and accuracy of solving problems. In the process of practice, we should pay attention to methods and ideas, rather than simply pursuing the correct answers.

3. Set a set of wrong questions: In the process of learning mathematics, you will inevitably encounter some wrong questions or problems. Setting a set of wrong questions is a good way to learn. You can record these mistakes or problems, and mark the reasons for the mistakes and the knowledge points that need attention. This will not only avoid making the same mistakes, but also quickly find the key and difficult points of review.

The focus of junior high school mathematics:

1, algebra: algebra is an important part of junior high school mathematics, including equations, functions, inequalities and other knowledge points. These knowledge points are widely used in the follow-up study and need to be mastered skillfully. At the same time, the study of algebra can also help students develop mathematical thinking and problem-solving ability.

2. Geometry: Geometry is another key point of junior high school mathematics, including plane geometry, solid geometry and other knowledge points. The study of geometry can help students better understand the concept of space and cultivate their spatial imagination and logical thinking ability.

3. Probability and statistics: Probability and statistics are closely related to real life in junior high school mathematics, including probability, statistical diagram, center and variance. Students need to master the basic concepts of probability statistics, such as the definition of probability, the making of statistical charts, the calculation of center and variance, and can use these concepts to solve practical problems.

4. Trigonometric function: Trigonometric function is the basis of learning geometric figures such as triangles and circles, and it is also an important tool to solve practical problems. Mastering the properties and formulas of trigonometric functions can help students better understand geometric figures and improve their ability to solve practical problems.