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教学内容:上海市《九年义务教育课本·数学》五年级第二学期第52页。教学目标:1.通过观察和动手操作认识正方体表面展开图是由六个相同的正方形组成的,但并不是所有六个完全相同的正方形的组合图形都能相折合成正方体。2.通过不同方法来判断哪些图形能折合成正方体,培养空间想象能力,逐步发展空间观念,并积累数学活动经验。3.通过小组合作学习培养学生的团队协作精神。教学重点:认识正方体展开图。教学难点:理解并运用不同的方法判断
Teaching content: Shanghai “Nine-year compulsory education textbooks, mathematics,” fifth grade second semester page 52. Teaching Objectives: 1. Observation and hands-on understanding of the cube surface Expansion is composed of six identical squares, but not all six identical square combinations can be folded into a cube. 2. Through different methods to determine which graphics can be folded into a cube, to develop space imagination, and gradually develop the concept of space, and accumulated experience in math activities. 3. Through the group cooperative learning training students teamwork spirit. Teaching focus: understanding cube expand map. Difficulties in teaching: to understand and use different methods to judge