Test-Teach-Test

Test-Teach-Test (TTT) is a lesson framework that reverses the logic of PPP by starting from learner performance rather than teacher presentation. The teacher sets a communicative task (Test 1), observes what learners can and cannot do, teaches to the gaps revealed (Teach), then sets a similar task to check progress (Test 2).

Note: TTT as a lesson framework should not be confused with the abbreviation TTT for Teacher Talking Time, which is a separate concept.

The Three Stages

1. Test 1 — Learners attempt a task or activity using whatever language they already have. The teacher monitors but does not pre-teach. This stage is diagnostic: it reveals what learners know, what they partially know, and what they lack.
2. Teach — Based on evidence from Test 1, the teacher focuses on the language areas where learners struggled. This might involve clarifying meaning, drilling pronunciation, working on form, or presenting new language. The teaching is targeted and responsive.
3. Test 2 — Learners attempt a similar (not identical) task. The teacher checks whether the teaching has had an effect and identifies any remaining gaps.

Why It Matters

TTT addresses one of the core weaknesses of PPP: the assumption that the teacher knows in advance what learners need. In PPP, the language point is predetermined — if learners already know it, the lesson wastes time; if they are not developmentally ready for it, the presentation may not stick. TTT sidesteps this by letting learner output drive the teaching.

The framework aligns well with principles from Formative Assessment — using evidence of learning to adjust instruction in real time. It also resonates with the Noticing Hypothesis: learners who have just failed to produce a form are primed to notice it when the teacher provides input.

Strengths

• Diagnostic: reveals actual learner needs rather than assumed ones
• Efficient: avoids teaching what learners already know
• Motivating: learners see immediate relevance when the teaching addresses problems they just experienced
• Flexible: the Teach phase can address grammar, vocabulary, pronunciation, discourse, or functional language depending on what emerges

Limitations

• Unpredictable: the teacher cannot fully plan the Teach phase in advance, which demands strong improvisational skills and broad language awareness
• Coverage gaps: important language points that learners avoid (rather than attempt and fail) may never surface
• Time pressure: diagnosing and responding to multiple emerging needs within a single lesson is demanding
• Not all language lends itself to this: some complex systems (e.g., article usage, aspect) are hard to diagnose from a single task

When to Use TTT

TTT works best when the teacher suspects learners have partial knowledge of the target area — they have encountered it but have not fully acquired it. It is particularly effective for revision lessons, mixed-ability classes (where diagnostic information is essential), and functional language where learners may have varied existing repertoires.

TTT is less suited to introducing entirely new language systems that learners have no prior exposure to, since Test 1 would reveal only absence rather than partial knowledge to build on.

Connection to Other Frameworks

TTT can be seen as a more learner-centred alternative to PPP, sharing the same three-phase rhythm but inverting the starting point. ESA offers yet another variation, with its flexible stage ordering. All three frameworks attempt to solve the same problem — how to structure a lesson that moves learners from not knowing to knowing — but they make different assumptions about where the teacher's diagnostic work should happen.

The diagnostic principle underlying TTT connects to broader assessment literacy: the ability to use Formative Assessment evidence to make instructional decisions. In this sense, TTT is not just a lesson shape but a habit of mind — teaching responsively rather than transmissively.