Summary of junior high school knowledge and skills necessary for senior high school The first lesson is the operation of numbers and formulas. We have studied real numbers in junior high school and know that letters can be represented by algebraic expressions or numbers. We call real numbers and algebraic expressions sum formulas for short. Algebraic expressions include algebraic expressions (polynomials, monomials), fractions and roots. They have the property of real numbers and can be operated. In the multiplication of polynomials, we have learned the multiplication formulas (square difference formula and complete square formula). And we know that multiplication formula can make polynomial operation simple. Because we will encounter complicated polynomial multiplication in high school, this section will expand the content of multiplication formula and supplement the complete square formula, cubic sum and cubic difference formula of the sum of three numbers. In radical operation, we have learned the radical operation in which the radical number is a real number, but in high school mathematics learning, we often encounter the situation that the radical number is a letter, but it is not involved in junior high school. So this section should be supplemented. Similarly, it is also necessary to add "complex fraction" and other related content. Second, factorization is an important identity deformation of algebra, which is opposite to algebraic expression multiplication. It plays an important role in fractional operation, equation solving and various identity deformations. This is an important basic skill. There are many methods of factorization. In addition to extracting common factors and formulas (square difference formula and complete square formula) involved in junior high school textbooks, there are also formula methods (cubic sum and cubic difference formula), cross multiplication, group decomposition and so on. The third lecture is about the relationship between roots and coefficients of quadratic equations in one variable. The current junior high school mathematics textbooks mainly require students to master the concept, solution and application of quadratic equation with one variable, and the formula for judging the roots of quadratic equation with one variable and the relationship between roots and coefficients have many applications in the chapters of quadratic function, inequality and analytic geometry in senior high school textbooks. The relationship between root and coefficient is expounded. The fourth lecture on inequality, I learned the solution of linear inequality of one variable and linear inequality of one variable in junior high school. In high school, I will further study the knowledge of unary quadratic inequality and fractional inequality. This lecture first introduces some necessary knowledge about inequality in the new curriculum standard of senior high school. The fifth lecture is that the maximum value of quadratic function is the main content of junior middle school function and the important foundation of senior high school study. As we all know in junior high school, quadratic function is the most important when the independent variable takes any real number. At that time, the function got the maximum value at, and there was no minimum value. In this section, we will continue to study the maximum value of a function when the independent variable takes a certain value. At the same time, learn the simple application of quadratic function maximum problem in real life. 6. In junior high school, we learned how to solve the quadratic equation of one variable. I have mastered the elimination method of understanding binary linear equations. When studying the conic curve in the new curriculum standard of senior high school, I need to use the method of solving binary quadratic equation. Therefore, this lecture introduces the solution method of simple binary quadratic equation. An integral equation containing two unknowns and an unknown term with the highest degree of 2 is called a binary quadratic equation. A system of equations consisting of a binary linear equation and a binary quadratic equation, or a system of equations consisting of two binary quadratic equations, is called a binary quadratic equation. Lecture 7 Solutions of Fractional Equation and Irrational Number Equation. In junior high school, everyone learned how to solve the fractional equation that can be transformed into a quadratic equation. In this lecture, we will learn how to solve the fractional equation and the irrational number equation which can be transformed into a quadratic equation. We only need to master (1) the solution of fractional equations composed of no more than three fractions, and we will use "denominator". (2) Understand the concept of irrational equation, master the solution of irrational equation that can be transformed into quadratic equation, and use "square" or "method of substitution" to find the root and test the root. I can only tell you the most important thing, what the teacher told us before, which is used a lot. You should read it all carefully!

Senior one math: function (very important! ! ! ! ! If you don't watch it, you will regret it for the rest of your life! ) absolute value circle

Chemistry: classification of substances (oxides will be subdivided later), solubility (important, there will be a new solubility calculation formula), acid and alkali salts, carbon and carbon oxides (high school students will learn hydrogen bonds in carbon, etc., which is very difficult).

Biology: chemistry and biology in high school are closely related, DNA and genetic probability.

Physics: electricity, heat, mechanical efficiency, object motion, etc.

Chemistry is almost always used in physics, but some high schools are a little difficult. It is necessary to change some viewpoints, such as phenolphthalein is not a universal index, and the biological changes are much worse. Others are just more difficult on the basis of the original, and the current textbooks don't know what it will look like. Finally, go here and have a look. /View/4 FEC 458 102D 276 A 200292 EDA。 HTML is copied. . . .