“混合运算和应用题”备课札记沈长生义务教育六年制小学数学课本第六册“混合运算和应用题”这一单元是本册的教学重点之一。它是在学生已学过较简单的混合运算和分步解答两步应用题的基础上进行教学的。本单元教材的内容和编排与现行教材相比，有了比较大的改进。具体地... “Mixed computing and application problems” preparation notes Shen Changsheng compulsory education six-year primary school mathematics textbook sixth volume “mixed computing and application of” this unit is one of the teaching focus of this book. It is based on the students have learned relatively simple hybrid computing and step-by-step answer to the two-step application questions based on teaching. The unit textbook content and choreography compared with the existing textbooks, has been greatly improved. specifically...