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一、复习旧知,导入新课。1.组织学生讨论:要求下面的问题,必须知道哪两个条件?(1)白兔和熏兔一共有多少只?(2)故事书比连环画多几本?(3)大猴只数是小猴的几倍?2.组织学生讨论:根据给出的“公园里有8只大熊猫,2只小熊猫”,可以提出什么样的问题?3.让学生独立解答教材第87页准备题:饲养小组养10只黑兔,16只白兔,一共养了多少只兔?学生解答后,教师引导他们思考:这道题里有几个条件?是几步计算的应用题,用什么方法计算?
First, review the old knowledge, into the new lesson. (1) How many white rabbits and smoked rabbits? (2) How many more story books than comic strips? (3) The number of large monkeys is How many times does a monkey be? 2. Organize student discussion: What questions can be asked based on the given “8 giant pandas and 2 little pandas in the park”? 3. : Raising group raising 10 black rabbits, 16 white rabbits, raising a total of how many rabbits? After the students answer, teachers guide them to think: there are several conditions in this question? Is a few steps to calculate the application problem, what method Calculate?