教学是预设与生成的矛盾统一体,课堂教学既要有预设又要有生成。没有生成,课堂就是封闭僵死的操练;没有预设,课堂就是混乱无序的盲动。预设是课前对教学目标、教学内容、教学过程、教学方法的预先设计。生成是指在具体教学中,因学情的变化,对目标、内容、过程、方法的适当调整以及在教学中由于教师的教学机智和合理调控,产生有价值的问题,解决问题 Teaching is the unity of the contradiction between presupposition and generation. Classroom teaching should be both preconditioned and generated. Did not generate, the classroom is closed rigorous exercises; no default, the classroom is chaotic chaos. The default is pre-class teaching objectives, teaching content, teaching process, teaching methods pre-designed. Generation refers to the specific teaching, due to changes in the situation, the target, content, process, method of adjustment as well as teaching in the teaching of teachers wit and reasonably control, produce valuable problems, solve the problem