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“数的计算”是小学数学教学的重要内容,正确认识计算在数学教学中的作用,准确了解计算的内在思想即算理,能使计算教学更加科学有效。皮亚杰认为:“6~12岁儿童(小学生)的认知结构由前运算阶段的表象图式演化为运算图式,该时期的心理操作着眼于抽象概念,属于运算性(逻辑性)的,但思维活动需要具体内容的支持。”数形结合思想可以使某些抽象的数学问题直观化、具体化,能够变抽象思维为形象思维,有助于小学生把握数学
Computation of numbers is an important part of mathematics teaching in primary schools. Correct understanding of the role of computation in mathematics teaching and accurate understanding of computational inner ideas, that is, arithmetic, can make computational teaching more scientific and effective. Piaget said: “The cognitive structure of children aged 6 to 12 (pupils) evolved from an anaphora of the pre-operation phase to an arithmetic schema. During this period, the psychological operation focused on abstract concepts and was computational (logical) , But the thinking activity needs the support of specific content. ”" Combining ideas with numbers can make certain abstract mathematical problems intuitive and concrete, and can change abstract thinking into thinking in terms of images, which helps pupils grasp mathematics