Let's give a simple example-for example, the basic process of teaching "Preliminary Understanding of Multiplication" is: (l) Calculate and observe the characteristics of the formula: 3+3, 2+4+3, 4+4+4, 1+3+6+2, ... (3) Discuss and explore this kind of identical addend formula. (4) Establish a basic mathematical model: "The formula of continuous addition of the same addend" can be calculated by the simple method of "the same addend × the number of the same addend" (multiplication).
Note: In the process of solving any mathematical problems and establishing mathematical models, only one mathematical thinking mode is rarely used, and many mathematical thinking methods are often used comprehensively. At the same time, the value of mathematical model is embodied in the process of establishing and solving practical problems. If the mathematical model is turned into a rigid material for students' mechanical memory, it will run counter to the idea that this paper wants to express.