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小学数学中“图形与几何”领域测量的教学,是从长度开始的。长度是线段的属性,线段的长度可以测量。日常生活中测量物体的长度,要把物体有关的边看成线段,通过测量线段的长度,得到物体的长度。所以“认识线段”作为“厘米和米”单元的起始课,要从现实中抽象出概念,是整个单元学习的知识基础。【教学内容】苏教版义务教育教科书数学二年级上册第59~60页例1和“想想做做”第1~5题。【教学目标】
Primary mathematics, “graphics and geometry,” the field of measurement teaching, is from the length of the beginning. The length is the attribute of the line segment, and the length of the line segment can be measured. To measure the length of an object in daily life, the relevant edge of the object should be regarded as a line segment, and the length of the object is obtained by measuring the length of the line segment. Therefore, “knowing line segment” as the starting point of the “CM and MI” unit, abstracting the concept from reality is the knowledge base of the entire unit learning. Teaching content】 【Sujiao version of compulsory education textbooks on the second grade of mathematics in the first 59 ~ 60 page 1 and “Think do ” 1 ~ 5 questions. 【teaching objectives】