【教学内容】人教版六年级上册第57~58页。【学具准备】圆规、教师给每个学生准备一个没有画圆心的圆。【教具准备】圆形物体、圆规、尺子、线绳、椭圆。【课前思考】《圆的认识》一课属于图形与几何的领域,培养学生空间观念是核心。在认识圆的过程中,教师就是让学生在对概念不敢肯定的情况下,设计活 Teaching content] PEP sixth grade on the first 57 ~ 58 pages. [Learning preparation] Compasses, teachers to each student to prepare a circle without drawing center. 【Teaching aids to prepare】 round objects, compasses, rulers, cords, ovals. [Thinking before class] “Awareness of the circle,” a lesson belongs to the field of graphics and geometry, training students is the core concept of space. In the process of understanding the circle, the teacher is to let the students not sure about the concept of design, living conditions