Why This Matters

"I can talk you through my whole unit — concept, statement of inquiry, summative task, all of it. Ask me what Thursday's lesson actually contains and I'll have to think about it." That's the honest confession behind most MYP planning: teachers learn to plan units the new way and keep planning lessons the old way, as a slot to fill with content and time. This is the gap where the framework quietly disappears. A unit plan is a promise. A lesson is where you either keep it or don't, forty-five or ninety minutes at a time.

Understand the Idea

Let's be direct about something first: there is no single mandated MYP lesson format. The IB does not specify a required lesson structure, a fixed number of phases, or a mandatory sequence you must follow in every classroom. What follows in this article is MyIBHub's own recommended frame — a tool we've found useful, not an IB requirement, and you should feel free to adapt it once you understand why each part exists.

Every lesson exists to do one job inside a larger arc: move the unit's inquiry forward by one increment. Before planning lesson content, it helps to be able to answer two questions about any lesson you're about to teach: which inquiry question does this lesson serve, and what evidence will I collect by the end of it that tells me whether students are getting there? If you can't answer either question, the lesson risks becoming content for its own sake, disconnected from the statement of inquiry you built in Chapter 03.

Our frame has five parts, and the acronym is just a memory aid, not a formula to fill in mechanically: hook, build, apply, check, reflect.

Hook — a short opening, two to five minutes, that reconnects students to the unit's concept or the previous lesson, similar in spirit to the provocation from Article 16 but smaller in scale. It answers "why are we back here today."

Build — the main input: new content, a demonstration, a text, a model. This is where most of your subject knowledge gets delivered, and where conceptual questioning from Article 17 should be doing quiet work throughout, not just at the end.

Apply — students use what was just built, at whatever scaffolding level fits where they are in the unit (see Article 19) — practising, discussing, producing something, testing an idea.

Check — a formative checkpoint: a short, low-stakes moment where you gather evidence of where students actually are, distinct from a formal formative assessment task. This might be as light as three students showing thumbs up or down, or as structured as an exit ticket.

Reflect — an exit reflection: students briefly articulate, in their own words, what they now understand, ideally tying back to the inquiry question the lesson served.

Not every lesson needs all five phases in equal weight, and not every lesson needs them in this exact order — a conceptual moment, the kind of relationship-or-transfer-level question described in Article 17, can land inside build, apply, or reflect depending on the day. The frame's value isn't the sequence; it's that each part forces a decision you'd otherwise skip.

See It in Practice

Here's the same lesson content — evaluating a primary source about factory conditions, inside the change/industrialisation unit — planned in two versions: a 45-minute period and a 90-minute block.

45-minute version:

  • Hook (3 min): One image of a factory floor, no caption. "What does this image assume about who's watching?"
  • Build (15 min): Teacher models applying the three-question source evaluation template (from Article 19) to one source, thinking aloud.
  • Apply (15 min): Students, in pairs, apply the same template to a new, different source — guided practice, teacher circulating.
  • Check (7 min): Exit ticket — one sentence: "What's one thing that makes a source unreliable, based on today?"
  • Reflect (5 min): Quick verbal round — one student per table shares their pair's answer to the exit ticket question aloud.

90-minute version — same lesson, same skill, more room:

  • Hook (5 min): Same image, but this time students first predict in writing what the photographer wanted viewers to feel, before discussing as a class.
  • Build (20 min): Teacher models the same template, but with two contrasting sources back-to-back — a factory owner's account and a worker's letter — so the modelling itself surfaces the concept of bias through contrast, not just definition.
  • Apply (35 min): Students work in pairs on two new sources, not one — applying the template once with support, then attempting the second source with the template removed, essentially compressing weeks two and three of the scaffold-and-fade sequence into one extended lesson for a subset of students who are ready.
  • Check (15 min): Small-group share-out — each pair presents their unsupported evaluation to another pair, who ask one clarifying question each, giving the teacher a chance to circulate and listen for misconceptions surfacing in real time.
  • Reflect (10 min): Written exit reflection, two to three sentences: "How did evaluating a source without the template feel different from with it, and what does that tell you about what you still need to practise?"

Notice what changed between the two versions isn't the presence of the five parts — both have all five — but the depth each part can hold. The 90-minute version can afford a second, harder round of apply; the 45-minute version has to trust that one round, done well, is enough for today and the fade continues next lesson.

Weak version, for contrast: a 90-minute block where "build" swallows 70 minutes of lecture, "apply" is a rushed 10-minute worksheet nobody finishes, and check and reflect are dropped because the bell is close. The frame technically exists in the plan but collapses under time pressure because build wasn't given a boundary.

Apply It

🛑 Do this now. Plan three consecutive lessons for your own unit using the hook-build-apply-check-reflect frame, or your own adapted version of it — five parts, roughly time-boxed, for each of the three lessons.

Once drafted, check one thing specifically: do the three lessons escalate, or do they repeat? Escalation means lesson two asks more of students than lesson one did — more independence, a harder source, less scaffolding, a bigger conceptual leap — consistent with the scaffold-and-fade sequence from Article 19. Repetition means lesson two is structurally identical to lesson one with different surface content, which is a common trap when a frame gets used mechanically rather than deliberately.

🧭 Planning decision. For each of your three lessons, write one sentence answering: "which inquiry question does this lesson serve, and what evidence will I collect by the end?" If you can't answer both halves for all three lessons, revise until you can — that's the real test of whether the lesson connects to the unit arc or just fills a slot.

The artefact: three consecutive lesson plans, each time-boxed across the five parts, each tied to a stated inquiry question and a stated piece of evidence, visibly escalating from lesson one to lesson three.

Avoid This

Symptom: "build" eats the whole lesson and apply gets cut. This is the single most common failure of the frame — content delivery expands to fill available time because it feels the safest to protect. Fix: time-box build explicitly in your written plan, with a number attached, and treat that number as a real boundary, not a suggestion.

Symptom: check and reflect get dropped when the lesson runs long. These feel optional because they don't look like "content," but they're where you actually find out whether the lesson worked. Fix: if time runs short, cut from build or apply, never from check — a two-minute check is better than a lesson with no evidence at all.

Symptom: the frame becomes a checklist filled in after the fact rather than a planning tool used before. Teachers write "hook, build, apply, check, reflect" as headers and then write generic content under each without connecting any of it to the unit's inquiry question. Fix: write the inquiry question and evidence sentence first, before filling in the five parts — the frame should follow from the question, not replace it.

Check Yourself

Pick your very next lesson. Can you say, in one sentence each, which inquiry question it serves and what evidence you'll walk away with at the end? If either answer is vague, revise the lesson before you teach it — not after.

Continue Learning

Your students are producing work. Chapter 05 is about knowing what it tells you.

📎 Download: the MYP Lesson Planning Framework.
📌 Official source: see the IB's MYP: From Principles into Practice — note that lesson-level structure is deliberately left to teacher and school judgement, so treat any specific frame, including this one, as a tool, not a rule.

→ Next: Chapter 05 — Judge the Learning.