案例:小数的大小比较一、教师出题学生做,总结规律1.复习:832○799,6124○6214,1003○999。说说怎样比较整数的大小。2.例题:如何比较0.48元、0.6元的大小呢?说比较的方法。比较小数大小与比较整数大小有什么异同点?二、学生出题老师做,验证规律师:总结出小数的大小比较规 Case: the size of a fraction of a teacher to give students to do, summarize the law 1. Review: 832 ○ 799,6124 ○ 6214,1003 ○ 999. Talk about how to compare the size of an integer. 2. Example: How to compare 0.48 yuan, 0.6 yuan in size? Said that the method of comparison. Compare the decimal size and the size of the integer compared to what are the similarities and differences? Second, the students to do the teacher, validation rules Lawyers: Summarized the size of the decimal rules