The methods

Four techniques, written as instructions rather than theory.

Each one below is described the way we'd explain it in a tutorial: what to do, in what order, and the mistake that quietly ruins it.

A hand holding a fanned stack of handwritten index cards

0120–40 min per session

Active recall

  1. 1Read one section once, slowly, then close it.
  2. 2Write down everything you remember on blank paper — messy is fine.
  3. 3Reopen the source and mark in a second colour only what you missed.
  4. 4Turn each miss into a question card, not a summary.

Common mistakeWriting questions you can answer from the shape of the sentence. If the card's answer is 'yes', rewrite it.

A stopwatch and small clock beside a closed notebook on a wooden table

0210–15 min daily

Spaced repetition

  1. 1Review new material the next day, then after three days, then a week, then a fortnight.
  2. 2If a card fails, reset it to the next-day slot — no partial credit.
  3. 3Cap daily reviews at 15 minutes so the habit survives busy weeks.
  4. 4Keep one deck per module; merged decks quietly become unreviewable.

Common mistakeReviewing everything the night before. Spacing works because of the gaps, not the volume.

Interleaving & focused blocks

Interleaving

Instead of twenty problems of one type, do six mixed sets of three. You're forced to first decide which method applies — the exact skill an exam tests. Expect it to feel worse in the moment and score better later.

Focused blocks

One block, one artefact: a page of recall notes, eight finished problems, one paragraph of an essay. Blocks without an output turn into reading, and reading turns into scrolling.

Questions students actually ask