我们常常看见孩子们在公开课里快乐的动手,兴奋的动脑,但是到了自己的课堂,却总是因为准备学具太麻烦或因为学具操作影响课堂纪律或怕课堂任务完不成而忽视学生的操作,或让操作流于形式,这种让学生做一回“操作工”的做法,不仅影响了学生对抽象的数学模型、概念的理解,也不利于发展学生的思维。图形教学中的 We often see children in the open class happy, excited brain, but to their own classroom, but always because of preparation for learning too cumbersome or because the operation of the school affect classroom discipline or classroom tasks can not be completed and neglected students Operation, or let the operation flow into the form, this allows students to do a back “operator ” approach, not only affects the students understanding of abstract mathematical models, concepts, but also not conducive to the development of student thinking. In graphic teaching