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【教学内容】人教版二年级上册第4页例4,例5以及第4页做一做,练习一第3、4、5题。【教学过程】一、习旧引新,初建长度观念1.复习导入。师:上节课我们学会了什么知识?预设:我们认识了长度单位厘米,会用厘米尺量物体的长度。2.引入“米”。师:请大家拿出厘米尺,请一位同学量教室黑板的长。其他同学量数学书的长。比一比,看谁量得快!师:同学们都已经量出数学书大约长26厘米,而这一位
【Teaching content】 PEP P.2 grade 4 Page 4 Example 4, Example 5 and page 4 to do one, practice one of the first 3,4,5 questions. [Teaching process] First, the old cited new, the initial concept of length 1. Review import. Teacher: What knowledge did we learn in the last lesson? Default: We know the unit of centimeter in length, and we can measure the length of the object in centimeters. 2. The introduction of “rice”. Teacher: Please take out the centimeter, please a classmate classroom blackboard length. Other classmates math book length. Compare to see who gets faster! Teacher: The students have already measured about 26 centimeters in math books, and this one