【教学内容】苏教版第四册第七单元第64~66页。【教学重点、难点】认识角,知道角的各部分名称;会比较角的大小,体会理解角的大小与两边张开的程度有关。【学具准备】活动角、三角尺、纸、小棒、毛线、铁丝等。【教学过程】一、创设情境,激发兴趣师:给你4根小棒,你能摆成什么图形?(四边形)(课件出示相应图形),给你三根小棒,你能摆成什么图形?(三角形),请同学们动手摆一摆。(学生动手操作)师:如果从三角形中任意 Teaching content】 【Sujiao version fourth book seventh unit pages 64 ~ 66. [Teaching emphasis, difficult] Know the angle, know the name of each part of the angle; will compare the size of the angle, understand the size of the angle of understanding and the extent of the open on both sides. [Learning preparation] activity angle, triangular ruler, paper, small sticks, wool, wire and so on. 【Teaching process】 First, create situations to stimulate interest Teacher: Give you 4 small sticks, what can you put into the figure? (Quadrilateral) (courseware to produce the corresponding graphics), give you three small sticks, what kind of graphics can you put? (Triangle), hands-on feast students. (Student hands-on operation) Teacher: If you are from the triangle