一堂成功的课如同一部优秀的侦探小说,开头两三句就应该扣人心弦,引人入胜。那么导入就是课堂教学这部“侦探小说”的开头,出色地导入新课,犹如说书中的开讲,评弹中的开篇,影戏中的序幕。他不但可以让学生用最短的时间进入课堂教学的最佳状态,而且还可以吸引学生的兴趣,进而启发引导学生思考课堂教学内容。可是到底如何在课堂的一开始就将学生的无向注意变为有向注意,让每一个学生都以最佳状态投入到 A successful lesson is like an excellent detective novel, beginning with two or three sentences should be exciting and fascinating. Then the introduction is the beginning of this “detective novel ” into the classroom teaching, excellent introduction into the new lesson, like a preface in the story of the story, the first chapter in the appraisal bomb, the prelude in the movie. Not only can he help students get into the best of classroom teaching in the shortest time, but they can also attract students’ interest and inspire and guide students to think about classroom teaching. But in the end how to turn students’ undisciplined attention into attention at the beginning of the class so that every student can get into the best state