“分桃”(课程标准实验教科书北师大版数学二年级上册第四单元)是在学生已初步了解乘法的意义,学会用2～5的乘法口诀口算基础上进行教学的。“分一分与除法”,体现了动手操作与思考对于掌握除法意义的重要性。本单元内容分为四个层次,“分桃”、“分苹果”、“分糖果”都属于第 “Sub-peach” (the standard experimental textbook Beijing Normal University, the second grade on the fourth volume of the fourth unit) is the students have a preliminary understanding of the significance of multiplication, learn to use 2 to 5 multiplication formulas on the basis of teaching. “Divide and divide”, reflects the importance of hands-on operation and thinking to grasp the meaning of divisions. The unit is divided into four levels, “sub-peach”, “sub-apple”, “sub-candy” belong to the first