所谓核心模型,是指在小学数学众多的建模点中,存在几个重要的模型,这些模型贯穿于小学数学的整个结构,完成这些模型的构建,将会为学生理解小学数学的核心概念,奠定厚实的基础。能培养学生的思维能力,提高学生解决问题的能力。第一种核心模型是“十进制模型”“十进制”是很重 The so-called core model means that there are several important models among the modeling points in elementary mathematics. These models run through the whole structure of elementary mathematics. Completing the construction of these models will help students understand the core concepts of elementary mathematics, Lay a solid foundation. Ability to train students in thinking and improve students’ ability to solve problems. The first core model is “decimal model ” “decimal ” is very heavy