Junior high school mathematics mainly includes algebra and geometry.

The knowledge points of numbers and algebra mainly include rational numbers, real numbers, algebras, algebras, fractions, linear equations of one variable, linear equations of two variables, linear inequalities of one variable, linear functions, inverse proportional functions and quadratic functions.

The knowledge points of geometry include line segments, angles, intersecting lines, parallel lines, triangles, quadrilaterals, similar shapes, circles and so on.

The algebra part mainly includes:

Real numbers, algebraic expressions (algebraic, quadratic), equations (linear, quadratic, quadratic, fractional), inequalities, functions (proportional, linear, inverse proportional, quadratic).

The geometry part mainly includes:

Geometric preliminary (lines are angular parallel lines), triangle (understanding and properties of triangles, right triangle, isosceles triangle, congruent triangles, similar triangles, acute trigonometric function), quadrilateral (parallelogram, rectangle, diamond, square), circle, solid graphic foundation and graphic three major changes (translation, rotation and symmetry).

Effective methods of junior high school mathematics learning;

1, the acceptance of new knowledge in class and after class, and the cultivation of mathematical ability are mainly carried out in class, so we should pay attention to the learning efficiency in class and seek correct learning methods. In class, you should keep up with the teacher's ideas, actively explore thinking, predict the next steps, and compare your own problem-solving ideas with what the teacher said.

In particular, we should do a good job in learning basic knowledge and skills, and review them in time after class, leaving no doubt. First of all, we should recall the knowledge points the teacher said before doing various exercises, and correctly master the reasoning process of various formulas. If we are not clear, we should try our best to recall them instead of turning to the book immediately.

In a sense, you should not create a learning way of asking questions if you don't understand. For some problems, because of their unclear thinking, it is difficult to solve them at the moment. Let yourself calm down and analyze the problems carefully and try to solve them by yourself. At every learning stage, we should sort out and summarize, and combine the points, lines and surfaces of knowledge into a knowledge network and bring it into our own knowledge system.

2, focusing on Excellence: in terms of the requirements of the examination syllabus, there are three levels of requirements for understanding, understanding and knowing the content; Generally speaking, the content to be understood and the methods to be mastered are the focus of examination. In previous years' exams, the probability of this aspect is relatively high; In the same test paper, the questions in this area

It also has more scores. People who "guess the questions" often have to work hard in this respect. Generally speaking, you can really guess a few points. But when it comes to comprehensive questions, these questions contain secondary content in the main content. At this time, "guessing questions" will not work.

When we talk about highlighting the key points, we should not only work hard on the main content and methods, but more importantly, we should find the connection between the key content and the secondary content, so that the main content is the secondary content and the key content covers all the content. The main content is thoroughly understood, and other contents and methods will be readily solved. In other words, grasping the main content is not to abandon the secondary content and isolate the main content, but to naturally highlight the main content from the analysis of the relationship between the contents.