数学教学中如何充分运用教材、发展学生创造性的思维、培养能力,确实是一个很有意义的研究课题.九年义务教育三年制初中数学教材(人教版),第十一章二次根式中的例习题,吸取了传统习题的精华,又有新的变迁,具有鲜明的典型性和丰富的延展性.教学中,充分发挥例习题的潜在功能,对发 How to make full use of teaching materials and develop students’ creative thinking and training abilities in mathematics teaching is indeed a very significant research topic. Nine-year Compulsory Education Three-year Junior High School Mathematics Textbook (PEP), Chapter 11 Secondary Roots The example exercises in the lectures draw on the essence of traditional exercises, and there are new changes. They have vivid typicality and extensive extensibility. In teaching, the potential functions of the example exercises are fully exerted.