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通过教学使学生建立初步的空间观念是小学数学教学的重要任务之一。小学生初步的空间观念是经过感知、理解、运用等过程才逐步形成和发展的.在进行圆柱体侧、表面积的教学时,要遵循学生认识事物的规律,以促进学生空间观念的建立、形成利发展。 [感知]感性认识是思维活动的基础,学生的空间观念的形成和发展是建立在感知的基础上。因此,在进行圆柱体侧、表面积的教学时,应紧密地联系学生的生活实际,以常见的自来水管,水桶、烟囱、罐头盒、药盒、圆柱形铅笔等物体及非圆柱形物体
Through teaching to enable students to establish the initial concept of space is one of the important tasks in primary school mathematics teaching. The initial concept of space for primary school students gradually formed and developed through the process of perception, understanding, application, etc. When teaching on the side of the cylinder and the surface area, we should follow the rules of students 'understanding of things to promote the establishment of students' development of. Perceptions Perceptual knowledge is the basis of thinking activities. The formation and development of students' space ideas are based on perception. Therefore, in the side of the cylinder, the surface area of teaching, should be closely linked to students' life, with common water pipes, buckets, chimneys, cans, boxes, cylindrical pencil and other objects and non-cylindrical objects