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图形的平移、旋转是初中数学的重要内容。从思维要求来看,学生在理解和掌握图形平移、旋转时是存在一定难度的。那么如何指导学生有效掌握这部分知识呢?下面谈谈我的一些看法。一、图形平移、旋转是一种知识图形平移、旋转是学生应该掌握的基本概念和性质,学生通过具体实例认识平移、旋转,掌握平移的方向,对应点连线互相平行或在一直线上;对应点到旋转中心距离相等、对应点与旋转中心连线所成的角彼此相等的性质;能够按
Graphic translation, rotation is an important part of junior high school mathematics. From the thinking requirements, students understand and master the graphics translation, rotation, there is a certain degree of difficulty. So how to guide students to effectively grasp this part of the knowledge? Here to talk about some of my views. First, the graphic translation, rotation is a kind of knowledge graphics translation, rotation is the students should master the basic concepts and nature of the students understand the translation, rotation, grasp the direction of translation through specific examples, the corresponding point of connection parallel to each other or in a straight line; The corresponding point to the center of rotation distance equal to the corresponding point and the rotation center of the angle formed by the equal to each other’s nature;