教学内容:义务教育课程标准实验教科书(北师大版)二年级下册第10￣11页。教材分析:二年级的学生能够熟练地计算百以内的加法和表内乘除法,但是将此两级运算混合在一起对于二年级的学生来说还是第一次接触,其运算顺序学生不太理解也是最容易出错的地方。另外,学生形成了从左到右 Teaching content: compulsory education curriculum standard experimental textbook (Beijing Normal University version) second grade volume of the first 10 ~ 11 pages. Textbook analysis: sophomores can skillfully calculate hundreds of additions and table multiplication and division, but the two operations are mixed together for the second-year students for the first time contact, the operation sequence of students do not quite understand It is also the most error-prone place. In addition, students form from left to right