一堂数学课,教师如果能够引导得法,抓住问题的关键,激发学生学习的兴趣,诱导学生积极思维,教学效果就会明显提高.如果教师对教学规律缺乏研究,对教材的内在联系钻研不深,课堂上就难以形成生动活泼的局面,教学效率也会相应降低.本文试就“工程问题”的教学,谈谈如何遵循教学规律,提高教学效率. A math lesson, if teachers can lead the law, seize the key to stimulate students interest in learning, to induce positive thinking of students, the teaching effect will be significantly improved.If teachers lack of research on the law of teaching, the internal relations of teaching materials is not deep , It is difficult to form a vivid and lively situation in the classroom, teaching efficiency will be reduced accordingly.This paper tries to teach “engineering problems”, talk about how to follow the teaching rules and improve teaching efficiency.