著名教育家叶澜教授指出:“要把教学过程看作是师生为实现教学任务和目的,围绕教学内容,共同参与,通过对话、沟通和合作活动,产生交互影响,以动态生成的方式推进教学活动的过程。”随着课程改革的不断深入,我们发现如今的数学课堂更加生动更加有活力了,孩子们在知识的建构过程中,个性不断张扬,智慧的火花不断涌现,师生与文本的对话更加酣畅淋漓了。而这种现象的出现,正是因为课堂上出现的各色生成元素,因此部分教师觉得课前的主观预设少了,对课 Professor Ye Lan, a famous educator, pointed out: “The teaching process should be seen as a way in which teachers and students interact with each other to achieve the tasks and objectives of teaching, around the content of teaching, and participate in activities through dialogue, communication and cooperation. Promote teaching activities. ”" With the deepening of curriculum reform, we found that today’s mathematics classroom more vivid and more energetic, children in the process of building knowledge, personality constantly publicity, the spark of wisdom continue to emerge, teachers and students Dialogue with the text more hearty. The appearance of this phenomenon is precisely because of the colored elements appearing in the classroom. Therefore, some teachers think that there is less subjective pre-class teaching,