背景介绍“平移与旋转”一章在以往的教材中没有。目前,学生对几何接触不多,尤其对几何的说理,有的同学感到困难,甚至害怕几何。“平移与旋转”相对来说学生的直观感觉强,能借此提高学生的数学学习积极性。另外,学习方式习惯于被动接受。为了改变这种被动接受的习惯方式,培养学生自己探索的能力,从七年级新教材开 Background Introduction The chapter “Translation and Rotation” has not been included in previous textbooks. At present, students have little contact with the geometry, especially the reasoning of geometry, and some students find it difficult or even afraid of geometry. “Translation and rotation ” Relatively speaking, the intuition of the students is strong, so as to enhance students' enthusiasm in math learning. In addition, learning habits are used to passive acceptance. In order to change this habitual way of passive acceptance, students develop their own ability to explore, starting from the seventh grade new teaching materials