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【教学内容】北师大版五年级上册第53~54页。【教学流程】一、案例呈现1.问题引入。师:美籍华人蔡金法教授曾对中美两国学生的数学能力进行过一次调查。在那次调查中蔡教授设计的问题是餐厅里,有一组大小一样的披萨饼,7个女孩平分2个披萨饼,3个男孩平分1个披萨饼。每个女孩和每个男孩,谁分到的更多?(学生自由读题)2.尝试解答。师:你们能应用已有的知识独立回答这个问题吗?(学生独立解答)二、初步交流1.自主学习。师:谁先来介绍一下你的方法?
【Content】 Beijing Normal University version of the fifth grade on the 53 ~ 54 pages. Teaching process First, the case is presented 1. The problem is introduced. Teacher: Professor Cai Jinfa, a Chinese American, once conducted a survey on the mathematical abilities of students in China and the United States. The problem that Professor Cai designed in that survey was that there was a group of equally sized pizza in the restaurant, seven girls bisecting two pizzas and three boys sharing one pizza. Each girl and every boy, who assigned more? (Students read freely) 2. Try to answer. Teacher: You can use the existing knowledge to answer this question independently? (Students independently answer) Second, the initial exchange 1. Autonomous learning. Teacher: Who first came to introduce your method?