动手操作能化难为易,是帮助小学生特别是低年级学生理解算理、学习新知、主动参与学习过程的有效途径。小学儿童的思维活动正经历以具体形象思维为主要形式向以抽象逻辑思维为主要形式发展的阶段。他们容易接受和理解直观、具体的感性知识,而数学本身是反映符号化的数学关系和空间形式,比较抽象、概括、枯燥。要解决这一矛盾,就要让学生动手操作、动脑思考,把抽象的知识变成看得见、讲得清的现象。从而揭示出数学知识内在的联系,化难 Hands-on operation can make life difficult, which is an effective way to help pupils, especially lower-grade students, to understand mathematics, learn new knowledge and take the initiative to participate in the learning process. Primary school children’s thinking activities are going through the concrete form of image-based thinking as the main form of abstract logical thinking as the main form of development. They are easy to accept and understand the intuitive and specific sensory knowledge, while mathematics itself reflects the symbolic mathematical relations and spatial forms, which are abstract, generalized and boring. To solve this contradiction, we should let the students operate their own hands and think through their brains, turning the abstract knowledge into a visible phenomenon and a clear one. Thus revealing the inherent connection of mathematics knowledge and making it difficult