数学课堂教学中有“预设”和“生成”之说.课前教师通过认真钻研教材、教法,精心制定教学目标,组织习题,设计教学程序,并尽量考虑到未来课堂上可能发生的事件、状况以及应对的策略等,这些内容统称为“预设”.“预设”的内容在课堂上的实施却不一定能称为“生成”.如果将“预设”的内容一成不 Pre-class teachers through careful study of teaching materials, teaching methods, elaborate teaching objectives, organize exercises, design teaching procedures, and as far as possible in the future to take into account the classroom Possible events, conditions and strategies to deal with, these elements collectively referred to as “default ”. “Preset ” content in the classroom implementation may not be called “generated ”Default " content into one