“认识线段”是苏教版《数学》二年级上册的内容。这节课的后半段,在学生初步掌握线段的特征后,我做了如下教学尝试。【教学片断】师:黑板的边可以看作是一条线段,这是线段的两个端点(手指黑板边的两端)。同学们也能在我们身边寻找到线段吗?学生汇报交流:书本的边,课桌的边……师:拿出一张长方形纸片,对折一次,你有什么发现?生:对折后纸片上多出了一条线。师:多出来的这条线是线段吗?如果是线段,端点在 “Recognize line segment ” is the content of the second edition of the second edition of “mathematics” of the Sujiao edition. The second half of this class, after the students initially mastered the characteristics of line segments, I made the following teaching attempt. Teaching Pieces Teacher: The edge of the blackboard can be considered as a line segment, which is the two endpoints of the line segment (both ends of the finger blackboard). Students can also find a line around us? Students report exchange: the edge of the book, the edge of the desk ... ... Teacher: Take out a rectangular piece of paper, folded once, what do you find? More out of a line. Teacher: This extra line is the line? If it is a line, the endpoint in