数学教学具有高度的抽象性,而低年级儿童的思维特点是具体形象思维占优势,抽象概括能力比较差。因此,教师必须借助于教具、学具,把抽象的数学知识具体生动地呈现在儿童面前,使他们容易理解和掌握。皮亚杰曾说过:“智慧自动作发端,活动是连接主体的桥梁。”意思是儿童学习数学,最初是通过动手操作而完成的。因此,教师在教学中要顺应学生的年龄特点, Mathematics teaching has a high degree of abstraction, while the thinking characteristics of children in lower grades are specific image thinking predominance, abstraction ability is relatively poor. Therefore, teachers must make use of aids and learning tools to present abstract mathematical knowledge to children in a vivid and vivid manner so that they can be easily understood and mastered. Piaget once said: “Wisdom starts automatically and activity is the bridge connecting the main body. ” It means that children learn math and did it first through hands-on operation. Therefore, teachers should conform to the age characteristics of students in teaching,