Mathematicization is the essence of mathematics, which tends to limit mathematical problems to life and reduce the level of mathematics learning; However, it will be metaphysical to limit mathematical problems to mathematical logic system for reasoning and verification, which is not in line with students' life experience and mathematics learning experience. Therefore, only by reasonably grasping the relationship between life and mathematics and mastering the degree of activation and mathematicization can students' literacy be properly improved.

Students have access to information about temperature almost every day, and they often see negative numbers in the weather forecast. They intuitively think that negative numbers can be used to represent temperatures below zero. Relying on this kind of life experience of students, it causes students to think about "how to express the temperature below zero with numbers", thus arousing their desire to explore.