长期以来，教师一直习惯于传统的备课方式。对于新教师，备课往往成为教参的搬家；对于老教师，备课主要决定于本人的惰性和经验。由于缺乏科学的备课理论和操作技术的指导，致使备课停留在非理性的、经验性的思辩水平上。近年来，有人提出了教学设计理论，它作为一种科学的备 For a long time, teachers have been accustomed to traditional preparation methods. For new teachers, preparation for lessons is often a move for teaching and learning; for older teachers, preparing lessons is mainly determined by their own inertia and experience. Due to the lack of scientific guidance on preparation theory and operating techniques, lesson preparation has remained at an irrational and empirical level of debate. In recent years, some people have proposed the teaching design theory as a scientific preparation.