毫不过分地说，直线和二次曲线是中专数学中极其重要的一部分内容．讲好这两章，对学生较深刻地理解解析几何的思想内涵和理论方法、对培养学生辩证唯物主义观点和分析解决数学问题能力，对学生学好微积分等是至关重要的．为此，我们在教材处理上和教学实践中做了如下尝试... It goes without saying that straight lines and conics are an extremely important part of secondary school mathematics. Speaking these two chapters, it is very important for students to understand the ideological connotation and theoretical methods of analytic geometry deeply, to cultivate students 'dialectical materialism, analyze and solve math problems, and improve students' calculus. For this reason, we have tried the following in teaching material processing and teaching practice ...