The first grade to the third grade of primary school is a cognitive process of a child from scratch, from zero to ten thousand. Students in grade one to grade three learn how to apply mathematics to simple consumption in daily life, and the accounting of income and expenditure settlement can stimulate a child's interest in mathematics to the greatest extent.

In the fourth grade of primary school, mathematics began to gradually guide children to explore larger numbers, and there was a division formula of three digits divided by two digits, and there were a lot of reading and writing, such as 100 thousand, one million, ten million, one billion, and so on, and there were corners and lines that might not be commonly used in real life. At the same time, in education, children should be good at finding problems and classify and express them with certain logical charts. The examples in the fourth-grade textbooks are special cases of knowledge that are close to life and easy for students to associate, so that students can master and integrate into life well, and at the same time, they can stimulate students' initiative to fall in love with math supervisors to the maximum extent.

Mathematics can only arouse students' strong interest in mathematics to the maximum extent, and they want to explore infinitely.

Starting with the inner beauty of mathematics in mathematics textbooks, once students understand and experience the inner beauty of mathematics, they can stimulate their interest in learning mathematics, thus stimulating their motivation to learn mathematics.