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【教学内容】苏教版二年级上册第48~50页。【教材及学情分析】本节课是在认识平均分的基础上理解除法的意义,它是用乘法口诀求商的基础,也是以后用除法解决实际问题的依据。教材是通过解决两个实际问题分别揭示除法的两种情形,而在学习本课之前,学生已经初步建立平均分的概念,掌握了平均分的两种操作方法,积累了一定的操作经验。因此教学时要重视从具体操作到用除法算式表述数量关系模型的建构过程,在直观基础上揭示除法意义。
Teaching content】 【Soviet version of the second grade on the first 48 ~ 50 pages. 【Teaching material and academic analysis】 This lesson is based on the understanding of the average division to understand the meaning of division, which is used to find the basis for multiplication formulas, but also the basis for the subsequent use of division to solve practical problems. The textbook reveals two cases of divisions respectively by solving two practical problems. Before this lesson, students have initially established the concept of average points, mastered the two operation methods of average points, and accumulated some operational experience. Therefore, teaching should pay attention to the construction process of expressing quantitative relation model from concrete operation to division formula, reveal the division meaning on the basis of intuition.