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这是一节普通的教学研讨课,由我来执教人教版《数学》六年级上册“圆的认识”。课上发生了一件很“尴尬”的事情:我准备在黑板上示范用圆规画圆,由于移动黑板的晃动和黑板面太光滑,致使圆规不能很好地固定,第一次画圆失败了。有学生笑了起来。再次调整后,由于圆规两脚的距离发生了变动,又没有画成功。整个课堂便“乱”了,学生有说的、有笑的,听课教师也在窃窃私语。于是,我“放弃”了再次画圆,进而有了下面的
This is a common teaching seminar, by my coaching PEP “sixth grade” volume “round understanding ”. There was a very awkward situation in class: I was going to demonstrate a compasses circle on a blackboard. Due to the sloshing of the moving blackboards and the too smooth blackboard, the compasses could not be well fixed. The first round Failed. Some students laughed. After adjustment again, due to changes in the distance between the compasses feet, but also did not draw successfully. The whole class will “chaos ”, and students have said, laughing, lecture teachers are whispering. So, I “give up ” again draw a circle, and then have the following