Correspondence is a way of thinking about the relationship between two set factors, while primary school mathematics is generally an intuitive chart with one-to-one correspondence, which is used to conceive the idea of function. For example, there is a one-to-one correspondence between points (number axes) on a straight line and specific numbers.

2. Hypothetical thinking method

Hypothesis is a way of thinking that first makes some assumptions about the known conditions or problems in the topic, then calculates according to the known conditions in the topic, makes appropriate adjustments according to the contradiction in quantity, and finally finds the correct answer. Hypothetical thinking is a meaningful imaginative thinking, which can make the problem to be solved more vivid and concrete after mastering it, thus enriching the thinking of solving problems.

3. Comparative thinking method

Comparative thinking is one of the common thinking methods in mathematics, and it is also a means to promote the development of students' thinking. In the application problem of teaching scores, teachers should be good at guiding students to compare the known quantity and the unknown quantity before and after the change of the problem, which can help students find the solution quickly.

4. Symbolic thinking method

Symbolic thinking is to use symbolic language (including letters, numbers, graphics and various specific symbols) to describe mathematical content. For example, in mathematics, all kinds of quantitative relations, quantitative changes and deduction and calculation between quantities all use lowercase letters to represent numbers, and use condensed forms of symbols to express a large amount of information. Such as laws, formulas, etc.

5. Analogical thinking method

Analogy means that based on the similarity between two types of mathematical objects, the known attributes of one type of mathematical object can be transferred to another type of mathematical object. Such as additive commutative law's sum-multiplication commutative law, rectangular area formula, parallelogram area formula, triangle area formula, etc. The idea of analogy not only makes mathematical knowledge easy to understand, but also makes the memory of formulas as natural and concise as logical conclusions.