Algebra mainly has the following points: 1, the operation of rational numbers, mainly about the three-level operation of rational numbers (addition, subtraction, multiplication and division). Here, we should pay attention to the symbolic consciousness of numbers and letters, that is, we should not be influenced by primary school numbers, and we will not do the questions when we see letters. 2. The three-level operation of algebraic expression pays attention to the cultivation of symbol consciousness and factorization, which is interchangeable with the multiplication of algebraic expression. Pay attention to the solution and application of four kinds of equations, such as square difference formula and complete square formula, such as positive, negative and deformation. 3. Equation, once for one yuan, once for two yuan, once for three yuan and twice for one yuan. Remember that equations are methods and means to solve problems. 4. The function will recognize the images of linear function, quadratic function and inverse proportional function, and remember their characteristics according to the conditions.
Geometry mainly has the following points: 1, which you should be familiar with. 2. The translation, rotation and axial symmetry of the graphics examine your spatial imagination and do more problems. 3. Know how to prove the congruence and similarity of triangles, pay attention to the complete process and strict steps, and recite five methods to prove the congruence of triangles and four methods to prove similarity; There are isosceles triangles, right triangles and golden triangles.
Attribute can be applied, which will be very helpful to prove the problem. 4. Quadrilateral, grasp the concepts of parallelogram, rectangle, square, diamond and trapezoid, and the subtle differences between them will make the choice bigger.
Make a fuss, pay attention to their judgment and nature, and you will also get 0.5 yuan for the proof. In recent years, the proportion of yuan in the senior high school entrance examination has become smaller and smaller, and the difficulty is much simpler than before.