linear function

、

inverse proportion function

、

quadratic function

Is the most important and difficult, especially

Functional image

Translation, rotation, symmetry, etc. Often at the end of the senior high school entrance examination

Final performance

Is a function combination circle/

similar figures

/Triangle/Quadrilateral gives a comprehensive problem. In the face of the finale, students should be encouraged to dare to do what they dare to do, and must not talk empty words. This kind of problem usually has several small problems at different levels, and the previous small problems are often not difficult to distinguish.

2、

Numbers, formulas,

Statistical chart

, triangle, quadrilateral, circle, column equation (group) or inequality (group), solving application problems is the key. The latter two items are comprehensive and difficult. These contents often appear in the form of big questions in the senior high school entrance examination. As far as numbers are concerned, there is a calculation question about numbers, which involves absolute values.

radical expression

Negative exponent, zero exponent,

Special trigonometric function value

Wait a minute. As far as formulas are concerned, fractions and roots

simplify

There are many possibilities to solve it, so we should pay attention to the definition at ordinary times.

operation sequence

、

Arithmetic law

Teaching, cultivate students' accurate and fast computing ability. Students should be encouraged to get stable scores for solutions rather than finals.

3、

As a small problem, we should also focus on mastering some exam knowledge. For example,

Scientific symbol

, the operation of electric power, the average in the preliminary statistics,

median

、

way

, variance, etc.

Axial symmetry

、

Central symmetry

, probability, translation, rotation,

factoring

、

Three-sided diagram

、

Solving right triangle

These questions are more likely to be taken as minor questions, and these knowledge points must be taken. It is more cost-effective to warn students not to ignore minor issues and pay attention to major issues, but to always pay attention to the correct rate of minor issues.

4、

For the structure and types of exam questions, there are generally multiple-choice questions, fill-in-the-blank questions and solution questions.

Middle school exam questions

The number is generally around 25, the basic questions are around 18, and the answer questions are around 7. Multiple choice questions and fill-in-the-blank questions are basic questions, accounting for less than 50% of the total score. The answer is a high-level question, accounting for more than 50% of the total score. The scores of multiple-choice questions and fill-in-the-blank questions are 3 points. The scope of knowledge examined in solving problems generally includes the calculation of 1) number.

2) Simplified calculation of the formula

3) Statistical chart or probability

4) quadrilateral and circle

5) Solving application problems with equations (groups) or inequalities (groups)

6) Painting questions

7) Full finale.