在新课改的大气候下,要求每个教师在教学中必须要实施课堂教学的有效性,以便于提高教学成果,那么如何将精讲精练,预习先导真正落实到教学中呢?以下就是笔者在实践教学中的一些浅见。预习先导,精讲精练的必要性。预习是学生主动的课前学习行为。在教学过程中,学生课前如果没有准备,听课就显得比较被动,课堂教学效率也不高,如果学生课前有预习,那么上课的时候就胸有成竹,课堂听课也有了重点,对教师教学内容反应就 Under the atmosphere of the new curriculum reform, each teacher must be required to implement the effectiveness of classroom teaching in teaching, so as to improve the teaching results. So how to put the essence into practice and preview the pilot into the teaching? The following is the author in the Some Humble Opinions in Practical Teaching. Preview of the pilot, the essence of the need to refine. Preview is a student’s active pre-class learning behavior. In the process of teaching, if students are not prepared before class, lectures become more passive, classroom teaching efficiency is not high, if the students have pre-class before class, then when you have a well-thought-out class, class lectures also have a focus on the teaching content of teachers on