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教学内容:苏教版数学二年级(上册)第59～60页。教学目标:1.使学生经历从具体情境中抽象出线段的过程,认识线段的特征,了解线段是有长短的,会正确地画线段、数线段。2.通过观察、比较、操作等活动,培养学生抽象简单几何图形的能力,发展初步的空间观念。3.使学生能够积极主动地参与到数学学习活动中,体会数学与生活的联系。教学重点:理解线段的特征。教学难点:线段表象的建立。
Teaching content: Sujiao version of mathematics second grade (Volume) 59 ~ 60 pages. Teaching Objectives: 1. To enable students to abstract from the specific context of the line segment of the process, recognize the characteristics of line segments, to understand the line segment is the length of the line will be correctly drawn, the number of segments. 2. Through the observation, comparison, operation and other activities, the ability to develop students abstract simple geometric shapes, the development of preliminary space concept. 3. To enable students to actively participate in mathematics learning activities, understand the relationship between mathematics and life. Teaching focus: to understand the characteristics of line segments. Teaching difficulties: the establishment of line appearances.