六年制第六册第71页例4:一个商店运进4箱热水瓶,每箱是12个。每个热水瓶卖6元,一共可以卖多少元? 这是一道连乘应用题,在这之前学生虽已学习过例3,初步掌握了连乘应用题的结构和解题方法,但从作业反馈的信息来看,由于两步都是乘法,有一部分学生搞不清每一步中谁作被乘数,谁作乘数?列出的算式不符合实际意义。因此我在教学例4时作了一些铺垫,把例4先分再合地展示给学生。 Example 6: Four boxes of thermos per 12 boxes are shipped in one store. Each thermos sold for 6 yuan, a total of how many dollars can be sold? This is a Lianliankan problems, prior to this, although students have already learned Example 3, preliminary mastered the structure and problem-solving method even by the application, but from the operation feedback Of the information, as two steps are multiplication, some students can not figure out who is multiplicand at each step, who make the multiplier? The formula is not in line with the practical significance. Therefore, when I was teaching Example 4, I made some groundwork to show Example 4 to students first and foremost.