In the view of life mathematics, the concept in the book is as follows: "As the mathematics of life, it is often empirical symbolic mathematics, and more is the use of language and intuition. Mathematics is life, which refers to informal mathematics that exists in life practice and is the mathematics that people get communication and understanding in the practical activities of social life. " But I understand it more as children's life experience related to mathematics, which is the best bridge to combine children's daily life or experience with mathematics in books.

For most people, the concept of realistic mathematics is the necessary knowledge for them to strengthen communication and interaction with the outside world, so as to obtain high-quality survival and promote social progress. Because everyone's experience is different, their understanding of realistic mathematics will be different. "For example, when a freshman calculates 26+9, some students say," Take 26 as 20 and 6, first use 6+9 to equal 15, and then use15+20 = 35 "; Some students said, "Think of 9 as 4 plus 5, first 26+4 equals 30, then 30+5 equals 35"; Some students said, "Let 26 be 25, 1, first 1+9 equals 10, and then 10+25 equals 35" ... Everyone will have a different understanding of the same topic. Of course, sometimes our understanding will inevitably be biased or even wrong, but this kind of mathematics based on our own experience is the realistic mathematics.

In the process of organizing primary school mathematics learning, if we want to reflect the characteristics of realistic mathematics and life mathematics, we must face up to the importance and necessity of students as the main body, proceed from the reality of students, make our mathematics class conform to the reality of students' lives, let our mathematics class consider the psychological characteristics of children's intuitive operation, and let our mathematics class take into account each student's different experiences for targeted practical guidance.