The five-minute retrieval habit

For years my lessons opened with a recap: I summarised last week, students nodded, and we moved on. It felt efficient and it was almost useless. Recognition is not recall, and nodding is not evidence.

Now every session begins with five minutes of blank-page retrieval. Three or four questions from earlier weeks, no notes, no calculator unless the topic requires one, and no marks attached. Students write what they have; gaps are information, not failure.

What survived the week is the only honest syllabus.

The effect on my teaching was larger than the effect on their memory. Within a month I could see which explanations had survived and which had evaporated, and I stopped guessing what to revisit. Two of my standard explanations - one on logarithms, one on conditional probability - turned out to disappear from almost every student within a fortnight, so I rebuilt them.

There are rules that keep it working. It is never graded. It is short enough to feel routine rather than dreaded. Questions are spaced deliberately, so a topic returns after a week, then a month, then a term. And we spend two minutes at the end reconstructing the answers together, out loud.

Students dislike it for about three weeks. Then they start arriving with the previous week half-rehearsed in their heads, which is the actual point: the habit moves the studying out of the lesson and into their week.