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一、多媒体的优势1.培养和增强学生的兴趣在初中阶段,学生主要集中在15—17岁年龄之间,他们上课时注意时间短、缺乏意志力并且社会经验太少。所以如何培养学生学习数学的兴趣是教学改革的目标之一。2.突破重点和难点数学学科教学中的难点和重点的突破,是教学工作永恒的主题。几何中图形的平移与旋转、翻折与轴对称、轴对称图例、轴对称图形欣赏镶边与剪纸生活中的旋转圆的对称性
First, the advantages of multimedia 1. To develop and enhance student interest In the junior high school stage, students are mainly concentrated in the 15-17 age group, they pay attention to time in class is short, lack of willpower and social experience too little. Therefore, how to cultivate students’ interest in learning mathematics is one of the goals of teaching reform. Breakthrough in key and difficult mathematics teaching difficulties and breakthroughs in key teaching is the eternal theme. Translation and rotation of graphics in geometry, fold-and-axis symmetry, axisymmetric legend, axisymmetric graphics Appreciation of symmetry of rotating circles in striped and paper-cut life