一、缘起初中生在学习数学时,思维的发散能力往往欠缺,对于知识的迁移能力也弱,更谈不上举一反三了.因此教学中常常发现学生重复犯错,老师强调的内容还是不会做或者做错.其实,出现这些情况,缘于在平时的教学中,师生没有及时地总结数学模型.将数学知识转化成数学模型是完成知识迁移的关键环节.《课程标准》对数学建模提出了明确的要求:强调“从学生已有的经验出发,让学生亲身经历将实际问题抽象为数学模型 First, the origin of junior high school students in learning mathematics, the ability to diverge often lack of knowledge, the ability to migrate knowledge is weak, let alone go from right to wrong.Therefore, teaching is often found that students repeat mistakes, the teacher stressed the content or not to do Mistakes.In fact, these conditions arise, due to the usual teaching, teachers and students did not summarize the mathematical model in a timely manner.Mathematical knowledge into mathematics model is the key to complete the transfer of knowledge.Course standard ”mathematical modeling proposed The clear requirements: emphasize "starting from the students’ existing experience, let students experience the abstract problem as a mathematical model