The skill of solving the moving point problem in seventh grade mathematics is to analyze the starting point, the end point, the journey and the speed, express each required quantity with unknowns, and establish equations with equations, so we must pay attention to the discussion of the left and right classification of distances.

The key to the problem of moving point is to seek quietness in motion. Read the stem carefully and extract key information from multiple conditions. Mathematical thinking is the idea of classification, sorting out and classifying the extracted key information. The combination of numbers and shapes and the transformation of ideas, and the combination of numbers and shapes of key information make mathematical problems clear at a glance. Combining the above ideas, we can effectively solve the problem of middle school relocation.

How to learn math well

As we know, the pain index is inversely proportional to the understanding index, and the more understanding, the less pain. Mathematics is a headache for many students because we lack real understanding in the process of mathematics learning and teaching.

The expression framework of our mathematics textbooks has remained basically unchanged for many years, so today's students' learning pain points are similar to those of students 30 years ago, which means it is difficult for us to solve the mathematics learning pain points in the current mathematics textbooks and reach a real understanding.

This is also one of the missions of this book, breaking through the expression framework of current mathematics textbooks and solving the pain points of students' understanding. The following ten chapters (basically covering the main knowledge points of high school mathematics) are trying to do this.