导学内容〕九年义务教育六年制小学数学第八册第一单元“混合运算和应用题”的主要内容包括 :混合运算、应用题、数据整理和求平均数。这些内容都是在前面已学过或已有所渗透的相关知识的基础上进行教学的 ,既是旧知识的延伸和扩展 ,又为后面进一步学习有关知识做好铺垫 ,所以? Guide content] nine-year compulsory education six-year elementary school mathematics eighth unit first unit “mixed computing and application of” the main contents include: mixed computing, problem solving, data sorting and averaging. These contents are based on the previously learned or infiltrated knowledge based on the teaching, both the extension and expansion of the old knowledge, but also for further study of the relevant knowledge to pave the way, so?