Collective lesson preparation is the most important carrier for schools to carry out teaching research and the most important starting point for implementing effective teaching. If collective lesson preparation only pays attention to the perfection of form and ignores the actual effect, I am afraid that the final loss is not only the important link of lesson preparation, but the whole teaching. Therefore, effective teaching should start with effective lesson preparation. Through long-term exploration and research, the author believes that effective collective lesson preparation must firmly grasp the following three links. First, do a good job in collective learning of teaching materials. Collective learning of teaching materials is the premise and foundation of collective lesson preparation. A passage from Yu Yongzheng's research textbook, a famous special-grade teacher, is a classic, which is worth remembering by every teacher. Teacher Yu said: teaching this method and teaching that method can't be understood in textbooks. Therefore, in order to achieve high efficiency in the classroom, teachers must make great efforts in learning textbooks. Only by thoroughly studying the teaching materials can we be handy in the classroom and students can get rich returns in the classroom. Only when teachers really read textbooks can they find the entrance to deal with textbooks and grasp the core problems of classroom teaching. If a teacher can't read the textbook, can't read the textbook, can't read the textbook, and just wants the students to understand, the result can be imagined. Therefore, the school should learn the teaching materials collectively from the preparation group to grasp the collective preparation of Chinese lessons. Doing a good job in collective learning of textbooks can be divided into three steps. The first step is to make use of the annual winter and summer vacations, the school can organize all teachers to study and study teaching materials according to disciplines and grade groups, study the arrangement style of teaching materials, thoroughly understand the intention of the textbook writers, study the interpretation of each text and chapter, study the treatment of teaching materials, and exchange research experience. The second step is to divide the lesson preparation group into several groups according to the teaching materials, study the teaching emphases and difficulties of each unit, study the teaching objectives of each unit and each text and chapter, form a preliminary plan for collective lesson preparation, and then have a collective discussion in the lesson preparation group. The third step, on the basis of the first two steps, divide tasks, make use of winter and summer vacations, and strive to form a preliminary teaching plan for the whole textbook, which will be printed and distributed to all teachers in the preparation group for reference. The second is to do a good job in collective discussion of teaching plans. Collective discussion of lesson plans is the key link to improve the quality of collective lesson preparation. The collective study of textbooks and the formation of preliminary lesson plans only lay a good foundation for collective lesson preparation, which does not mean that collective lesson preparation is over. It is a key link to improve the quality of collective lesson preparation to deeply discuss the formed lesson plans. It is not necessary to discuss the lesson plan collectively, but first of all, it must be clear that one teacher will try in one class and other teachers in the preparation group will concentrate on the class. After the lecture, the teaching plan will be discussed according to the classroom implementation, the goal achievement and the students' classroom learning, so as to be targeted and clear. For example, whether the orientation of teaching objectives needs to be adjusted, how the teaching process is more reasonable, whether there is a better way to update the teaching difficulties, and how to modify and improve the teaching courseware. Through in-depth discussion of lesson plans after collective lectures, every teacher in the lesson preparation group can not only have lessons in mind, but also have lessons in mind before entering the classroom. The third is to do a good job of personal secondary recovery. Personal second lesson preparation is the guarantee to improve the quality of collective lesson preparation. The learning situation of each class is different, and the teaching style and personality of each teacher are different. Therefore, no matter how perfect the teaching plan is, it can't be completely copied. Teachers must make a second personal preparation in combination with students' reality and their own teaching reality. In the process of preparing lessons for the second time, first, we should pay attention to the analysis of classroom learning, and truly prepare lessons not only for textbooks, teaching methods and learning methods, but also for students; Second, we should pay attention to the research and preparation of classroom generative problems, so that the classroom can move forward smoothly in presupposition and bloom brilliantly in generation, and make the classroom a perfect combination of presupposition and generation; Third, we should attach importance to the research and preparation of students' classroom questioning, strive to make classroom questioning superficial, grasp the essence, lead to depth, let students get more things after the text, and let their growth not be limited to the classroom. Fourth, we should pay attention to designing different homework and exercises for students at different levels to ensure that different students get a sense of accomplishment in homework exercises. Fifth, we should write down the feelings of preparing lessons and participating in lectures and seminars to form teachers' self-reflection on teaching. Grasp the above three links, and finally submit the lesson plan for individual secondary lesson preparation formed after collective lesson preparation to the lesson preparation team leader for review and signature, and then the teachers enter the classroom with the signed lesson plan. The quality and efficiency of classroom teaching will be greatly improved.