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教学内容:五(六)年制课本第九(十一)册第87页例1。教学要求:使学生理解什么是长方体和正方体的表面积,在明确算理的基础上,正确计算长方体的表面积和实际中有关形体的用料面积。教具学具准备:长方体模型,长方体和正方体纸盒,火柴盒等。教学过程:一、复习。教师出示长方体模型,问:1.长方体有几个面?(让学生按上下、前后、左右数出6个面。)2.长方体的6个面有什么特点?(都是长方
Teaching Content: Five (6) Yearbook Textbook (11) Booklet 87 Example 1. Teaching Requirements: To enable students to understand what is the surface area of the cuboid and cube, on the basis of a clear calculation, the correct calculation of the surface area of the cuboid and the actual material area of the body. Teaching aids learning preparation: rectangular parallelepiped model, cube and cube carton, matchbox and so on. Teaching process: First, review. The teacher presents a cuboid model and asks: 1. How many sides of the cuboid? (Have the student count up, down, up, down, left and right out of 6 faces.) 2. What are the characteristics of the 6 faces of the cuboid?