随着新课程改革的不断深入,广大教师已形成了一种共识:课堂教学是教师和学生共同的生命历程。数学教学是数学活动的教学,是师生之间、生生之间交往互动与共同发展的过程,是一个动态的生成过程。当课堂偏离了预设的轨道时,教师要运用智慧,即时调整或改变预设的计划,促进有效生成,使课堂焕发出生命的活力。 With the continuous deepening of the new curriculum reform, the majority of teachers have formed a consensus that classroom teaching is the common life course of teachers and students. Mathematics teaching is the teaching of mathematics activities, which is the process of interaction, interaction and mutual development between students and students, and a dynamic process of generation. When the classroom deviates from the pre-set orbit, teachers should use wisdom to adjust or change the preset plan in real time so as to promote the effective generation and vitality of the classroom.