一、教学内容苏教版小学数学四年级上册第61、62页例题,“想想做做”第1~4题。二、教材分析本课是在学生学习了乘法的意义、计算方法和加法交换律、结合律的基础上进行教学的,以学生参加踢毽子的体育活动情景图引出例题,为概括乘法交换律和结合律提供具体的事例。以加法运算律为基础运用迁移、类推的方法,让学生在解决问题的同时发现、感悟、概述规律,并学会运用规律进行相关的简便计算。三、教学目标 First, the teaching content Sujiao primary school mathematics grade four on the first 61, 62 examples, “Think do ” 1 ~ 4 questions. Second, the textbook analysis This lesson is the students learn the meaning of multiplication, calculation and addition exchange law, combined with the law based on the teaching of students to participate in shuttlecock sports activities scenarios lead to examples, to sum up the law of multiplicative exchange and Binding law provides specific examples. Adopting the law of addition operation, we use the method of migration and analogy to let students discover, comprehend and summarize the laws while solving the problems, and learn to use the law to carry out the related simple calculations. Third, teaching objectives