新一轮基础教育改革有很多响亮的关键词,例如“预设”与“生成”。真正的数学课,教师就应该及时捕捉各种即时产生的教学信息,抓住稍纵即逝的教学机遇,引领学生全身心地投入到知识的建构与再创造中去,互动生成、深层开掘动态教学资源,使课堂产生“一波未平,一波又起”的跌宕起伏感,学生的认知和情感在如 A new round of fundamental education reform has many loud keywords, such as “default” and “generated”. In the real math class, teachers should catch all kinds of instant teaching information in time and grasp the fleeting teaching opportunities to guide students to fully devote themselves to the construction and re-creation of knowledge, to generate interactively and dig deep into dynamic teaching Resources, make the classroom produce “ups and downs, wave after wave” sense of ups and downs, the students’ cognition and emotion in such as