好的课堂引入能激发学生兴趣,调动学生学习的积极性,更好地达到课堂教学的目的。笔者比较重视结合不同的教学内容尝试各种形式的导入设计,取得了较好的效果。下面笔者结合教学实践经验谈谈双曲线课堂导入的案例。1从几何观点导入教师:这一章之所以叫圆锥曲线,是因为这一章所学的重要曲线都可以通过截取圆锥面得到。用一 The introduction of a good classroom can stimulate student interest, mobilize the enthusiasm of students to better achieve the purpose of classroom teaching. I pay more attention to combining different teaching content to try various forms of import design, and achieved good results. The following combination of practical teaching experience I talk about the introduction of hyperbolic class case. 1 Importing teachers from a geometric point of view: The reason why this chapter is called a conic is that the important curves learned in this chapter can be obtained by taking a conic. Use one