“用连乘解决问题”是北师大版三年级上册第四单元的教学内容,我在一次教研活动中执教了这节课。教学本节课之前,学生已有用乘加(减)等两步计算解决简单实际问题的基础,并积累了一定的数量关系及解决问题的经验,初步了解了同一问题可以有不同的解决方法。针对本节课的知识我设计了相应的练习,让学生通过练习更好地理解连乘解决问题的基本结 “Use even to solve the problem ” is the third unit of Beijing Normal University on the fourth unit of teaching content, I taught in a teaching and research activities of this lesson. Before teaching this lesson, students have already used the two-step calculation of multiplication plus (subtraction) to calculate the basis for solving simple and practical problems. They have accumulated a certain amount of relations and experience in problem solving, and learned that the same problem can have different solutions. I have designed the corresponding exercises for this lesson to enable students to better understand the basic knot of solving problems through exercises