1. Quadratic roots and cubic roots: Understand the simplification of quadratic roots and the process of solving equations, and how to find cubic roots.
2. Unary linear equation: master the solution method of unary linear equation, such as merging similar terms and shifting terms.
3. The nature of similar triangles: Understand the definition, nature and judgment method of similar triangles and apply it to practical problems.
4. Pythagorean theorem of right triangle: master the application of Pythagorean theorem in right triangle, including solving problems such as unknown side length.
5. Probability statistics: Understand the basic concepts of probability, such as events, sample space, probability, etc. Learn to calculate simple probability problems.
6. Data representation and analysis: master the methods of data collection, collation and representation (such as tables, bar charts, line charts, etc.). ), and can use statistical methods to analyze the data.
These knowledge points may take some time to understand and master. In the process of learning, if you encounter difficulties, you can ask the teacher or consult relevant materials. Doing more exercises and summarizing are also effective ways to improve understanding and memory.