数学知识的逻辑性强,空间与图形领域中的每一个知识点都不是孤立存在的。新知识往往能在旧知识基础上找到生长点,同时也构成后续新知识的生长点。小学生空间观念的形成要经历一个长期的反复的过程。人们认识事物一般是从粗略的整体感知开始,然后对事物进行细致观察和局部研究,再到整体把握。结合小学生空间观念形成由具体到抽象,在教学中先从形体的直观认识开始, The logic of mathematical knowledge is strong, and every knowledge point in the field of space and graphics does not exist in isolation. New knowledge can often find growth points on the basis of old knowledge, and at the same time, it also forms the growth point of new knowledge. The concept of primary school students to experience the concept of space to go through a long period of repetitive process. People generally know things from a rough sense of the overall start, and then carefully observe the things and local research, and then grasp the overall. With the formation of the concept of space for primary school students from the concrete to the abstract, the teaching begins with the visual understanding of the form,