1. Algebraic Equation: Solving linear equation, quadratic equation and fractional equation is the key content of junior high school mathematics, but it may be confusing for beginners. Especially in the process of solving fractional equation, it is necessary to understand the concept and operation rules of fraction and the elimination method.
2. The nature of geometric figures: The geometric figures in junior high school mathematics include straight lines, angles, triangles, quadrangles and so on. Among them, the properties and judgment theorems of triangles are complex parts, such as Pythagorean theorem, the properties of similar triangles and so on. These knowledge points require students to have certain spatial imagination and logical reasoning ability.
3. Function and image: When the concept of function is introduced into junior high school mathematics, students need to know the definition, nature and image of function. Especially for the images of common functions such as linear function, quadratic function and inverse proportional function, students need to master their characteristics and changing rules.
4. Probability statistics: The probability statistics in junior high school mathematics involves random events, probability calculation and data analysis. Students need to understand the concept and calculation method of probability, and how to collect, sort out and analyze data.
5. Trigonometric functions: Trigonometric functions in junior high school mathematics include sine, cosine and tangent. Students need to understand the definition and properties of trigonometric functions, and how to calculate and apply trigonometric functions.
The above are just some difficulties in junior high school mathematics learning, and each student's understanding and mastery may be different. By studying hard, doing more exercises and seeking help, I believe students can overcome these difficulties and get good grades.