没有预设的教学是不负责任的,而没有生成的课堂则是没有生命力的。预设和生成是一对相互依存的矛盾体。为了让课堂更加完美,教师要“精心预设,善用生成”。精心的预设是上好一节课的基础,教师必须做好充分的预设,但是预设又必须为生成留有空间,让生成来升华预设,呈现具有生命力的课堂。 No default teaching is irresponsible, but no generated classroom is lifeless. The default and generation are a pair of contradictory paradoxes. In order to make the classroom more perfect, teachers should “well-designed, make good use of ”. Careful presupposition is the foundation of a good class, teachers must make full assumptions, but the default and must have room for generation, so that the generation of sublimation preset, showing a vitality of the classroom.