课堂教学是教师教和学生学的双边互动过程。在活动过程中师生之间、生生之间相互交流、相互沟通、相互补充、相互提升。在这样一个复杂的交互过程中,会即时出现课前预设之外的新问题、新情况,此时教师要有效把握,发挥自己的教学机智,合理灵活地调整教学,从而使课堂有效的生成,课堂由此美丽、高效。 Classroom teaching is a bilateral interaction between teacher education and student learning. In the course of activities, teachers and students exchange their lives and communicate with each other, complement each other and enhance each other. In such a complex interaction process, new problems and new situations besides the pre-class presetting will appear immediately. At this time, teachers should effectively grasp and exert their own teaching tactics to adjust teaching reasonably and flexibly so that the classroom can be effectively generated Classroom is beautiful and efficient.