教学机智是在意外的教学情境中因势利导、急中生智、随机应变的教学技巧。课堂的意外主要可以分为三类:一是教师和学生的课堂差错,二是教学预设与课堂生成的矛盾,三是受其他因素影响的课堂意外,如课堂气氛、学习习惯等。我们可以采用 Teaching tactics is in the unexpected situation of teaching in the light of the circumstances, jumped in the wisdom, adaptability of teaching skills. The accidents in the classroom can be mainly divided into three categories: one is the classroom mistakes of teachers and students; the other is the conflict between instructional preconditions and classroom production; the other is classroom surprises influenced by other factors, such as classroom atmosphere, study habits and so on. We can adopt it