IRF / IRE Sequence
Question, answer, “Good.” What does the third turn do?
The IRF (or IRE) sequence is the three-part exchange typical of teacher-fronted talk: the teacher initiates, a student responds, and the teacher follows up, often by evaluating the answer.
A teacher asks for the opposite of cheap, a student says expensive, the teacher says Good, and the lesson moves on. Walk past almost any teacher-fronted lesson and you will hear this rhythm.
John Sinclair and Malcolm Coulthard (1975), analysing recordings of British primary lessons, described it as the core teaching exchange: an Initiation by the teacher, a Response from a pupil and Feedback from the teacher, hence IRF. Later work often reads the F as follow-up, a wider label. Hugh Mehan (1979), studying an American elementary classroom, called a near-identical pattern IRE: initiation, reply, evaluation. Jay Lemke (1990) later called it triadic dialogue.
The pattern has a poor reputation. Because the teacher often asks questions they know the answer to and then grades the reply, critics see it as a recitation script that leaves learners only the short middle turn. Gordon Wells (1993) and Hossein Nassaji and Wells (2000) pushed back: the same structure can serve very different purposes, depending on the activity and especially on the third turn. Their analysis suggests that a bare evaluation tends to close the exchange, while a follow-up asking students to explain or justify can keep it going. Richard Cullen (2002) made a similar case for EFL, distinguishing evaluative from discoursal follow-up. Hansun Zhang Waring (2008) argued that, in some contexts, explicit praise such as Very good quietly stops learners from voicing confusion or offering other answers.
So the point for language teachers is not to ban IRF but to use it knowingly. Brisk IRF chains are efficient for checking vocabulary, while a more open third turn, paired with referential questions, can turn a correct answer into the start of real dialogue.
In actionTwo ways to use the third turn
- T
- Which is better for students, a big city or a small town?
- S1
- Big city.
- T
- Good.
- T
- Big city, Minh says. Why, Minh? And Lan, do you agree?
- S2
- Not really. In Đà Lạt life is cheaper, so students can focus.
The first follow-up evaluates and closes the exchange. The second treats the answer as a contribution and hands the floor on, with the teacher holding back epistemic authority.
In the classroom
- 1
Record ten minutes of your teaching and label each third turn as evaluation (Good, No) or follow-up that builds on the answer (Why?, Who disagrees?).
- 2
Replace some evaluations with moves that pass the answer on: ask another learner to add, challenge or rephrase it, then give real wait time.
- 3
Keep fast IRF chains for accuracy checks, but signal the switch when you want discussion, for example by saying there is no single right answer.
Myth and reality
IRF is bad teaching that communicative classrooms should eliminate.
IRF is a flexible structure, not a method. It suits some goals, such as checking understanding, and its effect depends largely on whether the third turn closes the exchange down or opens it up.
Reflect
When a learner gives you the answer you expected, what do you usually do next, and what might happen if you did something else?
Worth a minute before your next lesson, or a conversation in the staffroom.
SourcesChecked against Crossref and library records
Sinclair and Coulthard named IRF within their rank-scale model of classroom discourse (lesson, transaction, exchange, move, act). Mehan’s 1979 IRE describes a near-identical pattern; Lemke’s (1990) ‘triadic dialogue’ is a third name for it.
Sinclair, J. McH., & Coulthard, R. M. (1975). Towards an analysis of discourse: The English used by teachers and pupils. Oxford University Press.
Mehan, H. (1979). Learning lessons: Social organization in the classroom. Harvard University Press.
The ethnographic classic that gave us IRE and showed how lessons are jointly built, turn by turn, by teacher and pupils.
Wells, G. (1993). Reevaluating the IRF sequence: A proposal for the articulation of theories of activity and discourse for the analysis of teaching and learning in the classroom. Linguistics and Education, 5(1), 1–37.
The influential argument that IRF is neither good nor bad in itself; its value depends on the activity it serves.
Nassaji, H., & Wells, G. (2000). What’s the use of ‘triadic dialogue’?: An investigation of teacher-student interaction. Applied Linguistics, 21(3), 376–406.
Classroom evidence that the follow-up move shapes whether IRF shuts talk down or opens it into discussion.
Cullen, R. (2002). Supportive teacher talk: The importance of the F-move. ELT Journal, 56(2), 117–127.
Short and practical: evaluative versus discoursal follow-up, illustrated with a real EFL lesson.
Waring, H. Z. (2008). Using explicit positive assessment in the language classroom: IRF, feedback, and learning opportunities. The Modern Language Journal, 92(4), 577–594.
A conversation-analytic look at why “Very good” can close down learning opportunities in ESL classrooms.
ConnectionsSee it in the graph
- Dialogic Teachingnot yet writtenBuilds on open follow-up moves to make classroom talk cumulative and genuinely exploratory.
- Display and Referential Questionsnot yet writtenKnown-answer display questions typically open IRF exchanges; referential questions change what follows.
- Wait Timenot yet writtenThe pauses around each IRF move shape how much learners can say.
- Epistemic Status and Epistemic StanceExplains why known-information questions make the third turn an evaluation.
- RecastsRecasts often occupy the third turn, where they can be heard as simple confirmation.
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