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教学内容:北师大版小学数学二年下册认识图形单元第一课时教学目标:1.结合生活实际,直观认识平面图形中的角。2.通过“画一画”“认一认”“指一指”等活动,直观认识角,会比较角的大小。3.培养学生的观察和动手操作能力、合作意识和学习数学的兴趣。教学重点:学生认识角、知道角的各部分名称、会比较角的大小。教学难点:初步让学生明确角的大小与两边张口的大小有关,与边的长短无关。教学过程:一、情境创设、激趣揭题
Teaching content: Beijing Normal University version of primary school mathematics two years to understand the graphic unit first lesson teaching objectives: 1. With the actual life, intuitive understanding of the plane in the graphic corner. 2. Through “draw a picture ” “recognize a recognition ” “refers to a finger ” and other activities, intuitive understanding of the angle, will compare the size of the angle. 3. Develop students’ observation and hands-on skills, awareness of cooperation and interest in learning math. Teaching Focus: Students know the angle, the corner of the various parts of the name, the size of the angle will be more. Difficulties in teaching: Initial allow students to clear the size of the angle with the size of the mouth on both sides, and the length of the side has nothing to do. Teaching process: First, the situation created, interesting exclamation