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在教学中,预设是必要的,因为教学首先是一个有目标、有计划的活动。教师必须在课前对自己的教学任务有一个清晰、理性的思考与安排。但同时这种预设是有弹性的、有留白的预设。因为教学过程本身是一个动态的建构的过程,这些由学生的原有经验、知识结构、个性等多方面的复杂性与差异性决定的。因此,教师在备课的过程中,充分考虑到课堂上可能会出现的情况,从而使整个预设留有更大的包容度和自由度,给生成留足空间。
In teaching, presupposition is necessary, because teaching is first of all a targeted and planned activity. Teachers must have a clear, rational thinking and arrangement of their teaching tasks before class. But at the same time this preset is flexible, there is a blank preset. Because the teaching process itself is a dynamic process of construction, these are the student’s original experience, knowledge structure, personality and many other aspects of the complexity and diversity of the decision. Therefore, during the lesson preparation, teachers should give full consideration to the possible situations in the classroom so as to make the whole preset have a greater degree of tolerance and freedom and leave sufficient space for the production.