上好课的关键在于备好课 ,而备好课的关键又在于备教材 .要备好教材 ,首当其冲就是深入分析教材 ,弄清知识的来龙去脉 ,掌握知识的内在联系 ,使知识的传授能承前启后 ,迁移孕伏 ,符合知识的发展规则 .那么 ,怎样才能做到深入分析数学教材呢 ?笔者认为 ,应从科学的角度 ,揭示教 The key to preparing a good lesson is to prepare the lesson. The key to preparing the lesson is to prepare the textbooks. To prepare the textbooks, it is of utmost importance to analyze the textbooks in depth, to understand the ins and outs of knowledge, and to master the internal connection of knowledge so that the teaching of knowledge can be carried forward. Migration and pregnancy are in line with the development rules of knowledge. Then, how can we do in-depth analysis of mathematics textbooks? The author believes that teaching should be revealed from a scientific perspective.