一、预设与生成钟启泉教授说:“课堂教学不应该是一个封闭系统,也不应拘泥于预先设定的固定不变的程式。预设的目标在实施过程中需要开放地纳入直接经验、弹性灵活的成分以及始料未及的体验,鼓励师生互动中的即兴创造,超越目标预定的要求。”课堂教学是有计划、有目的的活动,在教学前,教师要对课堂作精心预设。实际上,课堂是师生、生生不断交往互动的场域,是教师与学生个体或群体之间,知识、个性、情感不断碰撞、整合、调 First, presupposition and generation Professor Zhong Qiquan said: “Classroom teaching should not be a closed system, nor should be rigidly adhere to the pre-set fixed program. The default goal in the implementation process need to be openly incorporated into the direct experience , Flexible and flexible composition and unforeseen experiences to encourage improvisation in the interaction between teachers and students, beyond the goal of the target. ”Classroom teaching is a planned and purposeful activities, before teaching, teachers should class Carefully preset. In fact, the classroom is a field where students and students interact with each other constantly, which is the constant interaction between teachers and students or groups of individuals, knowledge, personality and emotion