《礼记·中庸》有言:“凡事预则立,不预则废。”上课也是如此,只有课前精心准备,才会演绎出精彩课堂。备课是保障教学质量的基础,做好备课工作,有利于教师把握教情和学情,有计划组织教学,明确教学目标,把握教学重点和难点,预设教学情境,实现课堂生成,关注学生生命的发展。要实现备课的这些功能,教师在备课过程中必须达到三重境界。第一重境界:有“我”之境——主动创造的过程教师在备课中关注自我,目中有我,在自主思考的 “Book of Righteous Mean” There is a saying: “Everything preconceived ideas, not prejudices. ” The same is true of class, only prepared carefully before class, will deduce a wonderful classroom. Preparation lesson is to ensure the quality of teaching, do a good job preparing lessons, help teachers grasp the teaching and learning, there are plans to organize teaching, a clear teaching objectives, grasp the teaching of key and difficult situations, the default teaching situations, to achieve classroom generation, focus on student life development of. To achieve these functions of lesson preparation, teachers must meet the triple realm of lesson preparation. The first realm: there is “I ” of the environment - the process of taking the initiative to create focus on self-preparation lesson, there are me, in the independent thinking