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【教学内容】苏教版一年级下册第八单元。【教学过程】一、联系生活,引出问题1.播放生活视频。三个小朋友正在玩画片,他们一个接着一个介绍自己手中的画片。小华:我有30张画片;小丽:我有8张画片;小军:我有33张画片。2.引导:同学们,你们能提出关于画片张数的减法问题吗?罗列学生的问题,从中选择:小华比小丽多多少张?【设计意图:从学生们熟悉的身边事入手,能激发学生解决问题的强烈愿望,为下一步学生的主动参与做好铺垫。】二、探索优化,解决问题1.根据问题,指名列出算式。
【Teaching content】 Sujiao version of the first volume of the eighth unit. [Teaching process] First, contact life, lead to problems 1. Play life video. Three children are playing the pictures, one by one they introduce the pictures of their own hands. Xiaohua: I have 30 pictures; Mary: I have 8 pictures; Xiao Jun: I have 33 pictures. 2. Guidance: Students, can you ask questions about the subtraction of the number of pictures? To list the students’ questions and choose from: How many are Xiaohua more than Mary? [Design intent: Start with what students are familiar with, Stimulate students’ strong desire to solve the problem and pave the way for the initiative of students in the next step. 】 Second, to explore and optimize, solve the problem 1. According to the problem, named formula listed.