一、背景介绍通过听学校组织的公开课,发现部分数学老师为了动手操作而动手操作,似乎一节没有动手操作的课就不是一节好课,似乎动手操作的少了,学生学习的主体地位就下降了。而这样的结果是教学不到位,时间不够,匆忙结束一环节,快速进入另一环节,看似热闹,收益颇小。因此,我们学校组织了以镇公开课的形式研讨如何将动手操作发挥得淋漓尽致。所以本次的研讨主题是“动手操作该用则用,该弃则弃。”课题是北师大版三年级下册第三单元的《轴对 First, the background introduction By listening to the open class organized by the school and found that some math teachers hands-on operation, it seems a section without hands-on class is not a good lesson, it seems less hands-on, the dominant position of student learning It dropped. And such a result is teaching is not in place, time is not enough, a hurried end of a link quickly into another link, seemingly lively, small profits. Therefore, our school organized a seminar in the form of an open seminar in town on how to get the most out of hands-on activities. Therefore, the theme of this seminar is “The hands-on use of the use of the abandoned is abandoned. ” The subject is the third unit of Beijing Normal University version of the third unit of the "axis of