Stop teaching five minutes before the bell
The last five minutes are usually spent packing bags. They are also the cheapest retrieval opportunity in the whole lesson.
Oct 1, 2026 · 1 min read
Most lessons end by dissolving: the teacher races the bell with one more example while bags are already zipped. Plan the ending instead. Retrieval strengthens memory more than re-exposure does (Roediger and Karpicke 2006), and the close of a lesson is a free retrieval slot: the material is fresh enough to recall successfully and old enough that recalling it counts as practice. Stop teaching at minus five, run a fixed consolidation routine, and only then allow the packing.
In practice
- Set a visible timer for the last five minutes. New content is banned after it starts; anything unfinished moves to tomorrow's starter.
- Run a one-minute brain dump: everything you remember from today, books closed, from memory. Then one minute comparing with a partner.
- Return to the lesson's objective and have students note in the margin how far they got. Collect nothing; the point is the recall.
- Packing up happens on your signal, after the routine, and takes thirty seconds because it was never allowed to start early.
Quick takeaway: the lesson ends when the learning is consolidated, not when the bags are zipped.