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教学实录:一、情境导入师:同学们,我们今天的课很简单,大家要一起动脑、动手、动口解决问题。同学们有没有兴趣?生:有!师:这不,说问题问题就来了——春节快到了,某超市将进行抽奖活动,凡购物满50元的消费者可以获得一次“转转盘”抽奖的机会。只要指针指向蓝色区域,就会得到牛奶一箱。请看!(出示课件)猜一猜有没有可能中奖呢?(板书:可能)生交头接耳,不一会儿纷纷举起手。生1:我觉得不可能。无论怎样转指针都指向了黄色,而都不可能指向蓝色,因为这里除了黄色根本就没有
Teaching Record: First, the situation introduced division: students, our class today is very simple, we must brainstorm, hands-on, moving to solve the problem. Students: Are there teachers? No: no, that’s the problem. The Spring Festival is approaching. A supermarket will conduct a lottery. Anyone who purchases over 50 yuan can get a turn around "Lucky draw opportunity. As long as the pointer points to the blue area, you get a box of milk. (Show courseware) Guess whether there is any chance of winning? (Blackboard: Maybe) Students whispered, and soon they raised their hands. Health 1: I think impossible. No matter how the pointer turn point to the yellow, but can not point to the blue, because there is no yellow here