教学内容北师大版《义务教育课程标准实验教科书·数学》二年级下册第70～71页。教学目标1.通过操作、比较、归纳,能够用自己的语言描述长方形、正方形的特征。2.经历观察、操作、合作交流等数学活动,体会长方形和正方形的关系,培养学生自主学习能力。3.在猜想、探究、思辩中感 Teaching contents The Beijing Normal University version of “compulsory education curriculum standard experimental textbook · Mathematics” second grade volumes 70 ~ 71 pages. Teaching Objectives 1. Through the operation, comparison, induction, can use their own language to describe the rectangular, square features. 2. Through observation, operation, cooperation and exchange and other mathematical activities, understand the relationship between rectangular and square, develop students’ ability to learn independently. In conjecture, exploration, thinking in the sense