How to Take Notes That You'll Actually Use Later

The Notes Most Students Take Are Useless

Walk into any lecture hall. 80% of students are transcribing the slides verbatim into a notebook they will open exactly once before the exam. Verbatim transcription correlates negatively with comprehension — your hand is busy, your brain isn't.

The Cornell method

Page divided into three zones:
- Right column (60%): the actual notes during class.
- Left column (25%): cue questions you write after class — the prompts you'd ask yourself on a quiz.
- Bottom (15%): a one-sentence summary.

The magic is the cue column. It forces re-engagement within 24 hours and turns the page into a self-quiz.

The Feynman method

Pretend you're explaining the concept to a 12-year-old in plain language. Anywhere your explanation needs jargon, you don't actually understand. Go back, study, retry. Use this for hard conceptual material — physics, philosophy, advanced maths.

When to use which

• Lecture-heavy classes → Cornell.
• Conceptual / theory-heavy classes → Feynman after class.
• Math problem sets → neither: do worked examples and write what you got wrong and why.

Hand vs laptop

Mueller & Oppenheimer (2014) found laptop note-takers performed worse on conceptual questions. The mechanism: typing is fast enough to transcribe, handwriting forces summarisation. If you must type, force yourself to summarise (no full sentences from the slide).

The 24-hour rule

Re-read your notes within 24 hours. Add cue questions. Underline what you got wrong already. After this single review, your notes are 5x more useful at exam time.

The bottom line

Notes are not a transcript. They are a tool for your future self to retrieve information faster than re-reading the textbook. Build them with that future use in mind.