本单元的主要内容有:口算除法和笔算除法。它是在表内乘、除法和一位数乘多位数的基础上进行教学的。它为学生掌握除数是两位数的除法,学习除数是多位数的除法奠定了扎实的知识和思维基础。口算除法一、教材分析教材通过创设一个运输蔬菜的情境,将口算除法和估算除法的内容蕴涵 The main contents of this unit are: Mouth division and pen division. It is based on the table multiplication, division and one digit multiplied by the number of teaching. It is for students to master the divisor is a two-digit division, learning division is the multi-digit division laid a solid foundation of knowledge and thinking. Port count division First, the textbook analysis textbooks through the creation of a transport vegetables situation, the calculation of the division of the mouth and the estimated division of content