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教学内容苏教版小学数学教科书第八册第22-24页。教学目标①认识三角形,理解三角形的定义和特征,会按角的大小对三角形进行分类。②利用三角形的稳定性在生活中的应用,增强学生的数学应用意识。③通过学生的独立、合作探究,培养学生的独立思考,勇于探究的精神和合作意识。教具准备多媒体课件。学具准备学具袋,自制三角形纸片。教学过程一、复习引入师:“我们学过哪几种角?下面的角是什么角?”(屏幕显
Teaching content Supiao version of primary school mathematics textbook eighth volumes pages 22-24. Teaching Objectives ① Recognize the triangle, understand the definition and characteristics of the triangle, the triangle will be classified according to the size of the angle. ② the use of the stability of the triangle in life, enhance students’ awareness of mathematical applications. ③ through the students ’independent and cooperative exploration, cultivate students’ independent thinking, courage to explore the spirit and sense of cooperation. Teaching aids to prepare multimedia courseware. Learning to prepare school bags, homemade triangular paper. Teaching process First, review the introduction division: “What kind of angle we have learned? What angle is the angle below?”