In 1960s, American educator Flanders put forward the famous Flanders Interactive Analysis System (FIAS). The system is an information feedback tool in the teaching process and an innovative and objective classroom behavior analysis technology.
Flanders divided all verbal interactions between teachers and students into three categories, namely, teacher language, student language and silence or confusion. And the sub-categories of each category are represented by a number. Among them, teachers' words can be divided into seven categories, namely: emotion, praise or encouragement to accept or use students' ideas, asking questions, teaching, giving instructions or orders, criticizing students or maintaining authority;
Students' language can be divided into three categories, namely: students speak passively-driven by teachers, students speak actively-students take the initiative; Silence or momentary confusion. The system requires researchers to record every 3 seconds in classroom observation and give it a code according to the meaning of the coding system.
In this way, a college English class lasts about 50 minutes, and * * * has about 1000 codes, which reflects a series of speech acts in the classroom in chronological order, and then reflects the characteristics of classroom interaction between teachers and students and the teaching characteristics and speech style of teachers.