“米的认识”是一节概念教学课,它是苏教版二年级上册的教学内容。在此之前,学生已经学习了长度单位厘米,对长度的概念有些初步的了解,具备了一定的用尺度量的能力。本节课教学的价值除了让学生认识长度单位米、知道米和厘米之间的进率、能用米尺测量物体的长度外,还应通过大量的操作实践和数学思考 “Rice’s understanding ” is a concept teaching class, it is the second edition of the Soviet version of teaching content. Prior to this, students have studied the centimeter unit of length, some preliminary understanding of the concept of length, with a certain amount of capacity measurement. The value of teaching in this lesson In addition to allowing students to know the length of the unit of rice, knowing the rate between meters and centimeters, the meter can measure the length of objects, but also through a large number of operational practice and mathematical thinking