中专数学教材容量大，知识面广，但课时安排相对较少。教师要想在有限的时间内把课本内容都传授给学生，就必须优化教学，提高效果。1指导思想要注在能力培养古人说“授人以鱼不如投人以渔”。5年的教学实践使我体会到，要想提高每一节课的“含金量”，不能单靠教法的技巧，讲 Secondary school mathematics textbooks have a large capacity and a wide range of knowledge, but there are relatively few class arrangements. If teachers want to teach textbooks to students within a limited time, they must optimize their teaching and improve their effectiveness. 1 The guiding ideology should be noted in the ability development. The ancients said that “it is better to give people fish than to invest in people to fish”. The five-year teaching practice has made me realize that if we want to improve the “gold content” of each lesson, we cannot rely solely on the teaching techniques.