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【教材分析】本课内容是北师大小学数学五年级下册第四单元长方体(二)的第二课的第一课时内容,本课内容是在认识了体积与容积的基础上进行的,体积单位是比较抽象的概念,为丰富学生的感性认识,加强学生对体积单位实际意义的理解,教科书设计了层层递进的三个问题。第一个问题是认识常见的体积单位;第二个问题是通过“做体积单位”的活动,体会1cm3、1dm3、1m3的实际大小;第三个问题是举例说明生活中体积单位是1cm3、1dm3、1m3的
【Textbook analysis】 This course is the first class content of the second class of the fourth unit cuboid (B) of the fifth unit of the fifth grade of mathematics in Beijing Normal University. The content of this lesson is based on understanding the volume and volume, The unit of volume is an abstract concept. In order to enrich the perceptual knowledge of students and reinforce the students’ understanding of the practical significance of volume units, the textbook has designed three problems progressive. The first problem is to recognize common volume units. The second problem is to understand the actual size of 1cm3, 1dm3, and 1m3 through “doing volume units ”. The third problem is to illustrate that the unit of volume in life is 1cm3 , 1dm3, 1m3