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· 4 min read
How to Plan a Lesson That Fits the Period
Manesh Jayawardhana
CIO & Co-founder
Every teacher knows the shape of a lesson that ran over: the explanation took longer than planned, the task ate the rest, and the last four minutes became “we’ll pick this up next time” while thirty people packed their bags.
What got cut was the check for understanding and the plenary — which is unfortunate, because those are the two segments that tell you whether the previous forty minutes worked.
What a plan actually has to do
A lesson plan isn’t a script. It’s a set of decisions made in advance so you don’t have to make them while thirty people are watching.
The decisions that matter most:
The objective, stated as something a student can do. “Understand photosynthesis” can’t be checked. “Explain what a plant takes in and what it produces” can be, in one question — and that difference determines whether you’ll know if the lesson worked.
The timings, per segment. Not because they’ll hold exactly, but because deciding in advance which segment is compressible means making that call calmly rather than in the final five minutes.
The check, with its own slot. If it doesn’t have time allocated, it’s the thing that disappears.
The differentiation, at both ends: what the students who finish in ten minutes do next, and what the students who won’t finish at all are expected to complete.
Why people get stuck here
- Objectives written as topics. “Fractions” is a topic. An objective says what changes.
- Optimistic timings. Explanations reliably take longer than planned, and tasks always do.
- The check squeezed out. It’s last, so it’s what gets dropped.
- Differentiation as an afterthought. Improvised extension tasks are usually just more of the same work.
What a good lesson plan contains
An objective you can assess in one question
If you can’t imagine the question that would tell you whether it landed, the objective isn’t specific enough yet.
Timings with a designated compressible segment
Mark in advance which part you’ll shorten if things run long. Usually it’s the main task — not the check.
A check that’s built in, not appended
A quick assessment partway through as well as at the end lets you adjust while there’s still lesson left to adjust.
Extension and support planned
One task for early finishers that extends rather than repeats, and a defined minimum for anyone who won’t reach the end.
| Segment | Share of Time | Gets Cut When Late? |
|---|---|---|
| Starter / recall | ~10% | Sometimes |
| Explanation | ~25% | Rarely — but should be tighter |
| Task | ~40% | This is the compressible one |
| Check | ~15% | Protect it |
| Plenary | ~10% | Protect it |
Common mistakes to avoid
- Writing an objective that can’t be observed, then having no way to assess it.
- Planning three activities for a period that fits two.
- Leaving the check for understanding until the end, where it’s first to be cut.
- Giving early finishers more of the same exercise rather than something that extends the idea.
- Planning the activities before the objective, which produces a lesson that’s busy rather than purposeful.
How to do it with Lesson Plan Builder
The Lesson Plan Builder allocates time across segments and gives the check its own slot.
- State the topic, level and the objective as something a student can do.
- Choose the structure that suits the content.
- Set timings for each segment and mark which one you’ll compress if needed.
- Add extension and support tasks explicitly.
- Keep the plan to a page — one you can actually glance at while teaching.
Other classroom tools are in the tools directory.
Frequently asked questions
How specific should an objective be?
Specific enough to observe. “Understand” is unassessable; “explain”, “calculate”, “identify” and “compare” all describe something a student visibly does.
Why plan the check for understanding separately?
Because it’s the segment that vanishes when a lesson overruns, and it’s the only part that tells you whether the rest worked. Giving it its own slot protects it.
What if the timings never hold?
They rarely hold exactly, and that’s fine. The point is deciding in advance which segment gives way — so the decision is made calmly rather than under pressure with three minutes left.
Final thought
Plan the check first and build the lesson around it. If you know exactly how you’ll tell whether it worked, the rest of the plan mostly writes itself.