教学内容:北师大版数学五年级下册“包装的学问”。教材分析与设计思路:“包装的学问”是一节实践活动课,它是在学生掌握了长方体、正方体的特征,学习了长方体、正方体表面积和体积计算方法的基础之上进行的。本节课涉及多个相同的长方体组合成新的长方体求表面积的计算,学生由于缺乏相应的生活经历和空间想象能力往往会感觉计算困难,因此必须借助实物操作,让学生在操作中获取直观感受和认识,从而理解几个长方 Teaching content: Beijing Normal University version of the fifth grade under the book “packaging knowledge ”. Textbook analysis and design ideas: “Packaging knowledge ” is a practical activity class, which is based on the students mastered the characteristics of cuboids, cubes, learn the cuboid, cube surface area and volume based on the calculation method. This lesson involves the calculation of multiple rectangular cubes combined into a new cuboid surface area. Students often find it difficult to calculate due to lack of corresponding life experience and spatial imagination. Therefore, students must obtain practical intuition through in-kind operation And understanding, so as to understand a few things