《认识厘米》是苏教版小学数学二年级上册的教学内容,是“量与计量”的起始课。通过这节课的教学,要让学生初步了解长度单位的产生过程,体会统一长度单位的必要性。那么,在教学中如何让学生产生统一长度单位的需求呢?首先,我们先来看教材是如何编写的。基于教材编排,我进行了如下设计。1.提出问题。师:小朋友们,在实际生活中,我们常常需要测量一些物体的长度。我现在要测量教室里的课桌有多 “Understanding centimeter” is the teaching content of the second grade of the second grade of the Sujiao version of elementary school mathematics, is the starting class of “volume and measurement”. Through the teaching of this lesson, students should be given a preliminary understanding of the production process of length units and understand the necessity of uniting length units. So, how to make students produce uniform length units in teaching? First of all, let’s see how the textbooks are prepared. Based on the textbook layout, I conducted the following design. Ask questions Teacher: Children, in real life, we often need to measure the length of some objects. Now I want to measure how many desks in the classroom