课堂教学是一个多变量的动态系统,课堂上,既有知识的传授、智能的培养,也有师生间情感的沟通、学生间思想的交流,以及师生与外界环境的多侧面、多层次的相互作用,因此,教学中难免会出现一些意外,甚至会出现一些干扰教学的不协调因 Classroom teaching is a multivariate dynamic system. In class, both imparting knowledge and cultivating intelligence, as well as the communication between teachers and students, the exchange of ideas among students, and the multi-faceted and multi-level relationships between teachers and students and the external environment Therefore, some surprises will inevitably occur in teaching and even some uncoordinated factors may interfere with teaching