1, the concept should be clear: junior high school algebra involves many basic concepts, such as numbers, formulas, equations, functions and so on. These concepts are the basis of learning algebra, so we must understand them thoroughly. For example, in this part of the formula, we need to master the concepts of algebra, monomial, polynomial and similar items and be able to distinguish them.
2, the operation should be accurate: junior high school algebra involves many operations, such as addition, subtraction, multiplication, division, multiplication, root and so on. These operations need to master the correct operating rules and steps to ensure accuracy and speed. The part of power needs to master the operation law of power and non-zero radix power, and also pay attention to the details such as even power of negative number is positive number and odd power of positive number is positive number.
3, equations and functions should be used: junior high school algebra involves many equations and functions, which are widely used in real life. For example, one-dimensional linear equations can be used to solve travel problems, engineering problems, shopping problems and so on. Linear function can be used to solve the maximum problem and scheme selection problem in practical problems.
Related contents of junior high school algebra
1, junior high school algebra starts with the concept of number. This includes rational and irrational numbers, positive numbers, negative numbers and zeros, as well as integers, decimals and fractions. Students need to understand the definitions, properties and operation rules of these numbers, and be able to solve various problems related to these numbers. For example, there are clear rules for addition, subtraction, multiplication and division of rational numbers, which require students to master skillfully.
2. The concept of formula is another important concept in junior high school algebra. This includes algebraic expressions, monomials, polynomials and similar terms. Students need to understand the definitions, properties and operation rules of these formulas, and be able to solve various problems related to these formulas. For example, the addition and subtraction of polynomials need to combine similar terms before addition and subtraction.
3. Equation is an important content of junior high school algebra. This includes one-dimensional linear equation, one-dimensional quadratic equation and so on. Students need to understand the definition, nature and solution of the equation, and can solve various problems related to the equation. For example, there are formula methods and factorization methods for solving quadratic equations in one variable, which require students to master and skillfully use.