How to take notes you will actually use later
Most notes are written once and never read again. That is a lot of effort for very little return.
Writing everything down is the wrong goal
Transcribing a lecture word for word feels thorough but leaves you no attention for understanding it. You end up with a document you did not process and will not enjoy revisiting.
Notes are for capturing structure and the things you would not otherwise remember — the explanation that finally made sense, the worked example, the point the lecturer stressed. If it is already in the textbook, a reference to it is enough.
Aim to leave a lecture having understood most of it, with notes that let you rebuild the rest. That is a different goal from writing continuously.
Handwriting helps, and diagrams help more
Studies comparing handwritten and typed notes generally find better conceptual recall from handwriting, because writing is slower and forces you to summarise rather than transcribe.
Diagrams are underused by students and enormously valuable in technical subjects. A drawn flow, circuit or force diagram encodes relationships that a paragraph describes poorly — and drawing it is itself a test of whether you understood.
Mixing both — typed structure for speed, drawn diagrams for relationships — usually beats committing to either alone.
Leave space for your later self
Leave a margin or blank space on every page. Later, when you revise or attend a tutorial, add the clarification, the exam question that used this topic, or the thing you got wrong.
This turns notes from a record of one day into a document that improves. Notes that grow get reopened; notes that are finished get abandoned.
Review within a day, briefly
Spending five minutes rereading a lecture's notes the same evening dramatically improves what survives, because you are retrieving while the context is still available to repair gaps.
Do it as recall rather than reading: cover the page, say what the lecture covered, then check. Five active minutes beat thirty passive ones the night before an exam.
For teachers: structure is what students revise from
Students revise from structure — headings, numbered steps, worked examples, and clearly marked definitions. Material delivered as continuous prose is much harder to revise from, regardless of how clear it was in the room.
Stating explicitly what students should be able to do after a topic gives them a way to test themselves, and it makes your own assessment easier to write.
Keeping a notebook per class with a page per lesson, including the diagrams you draw on the board, means next year's preparation starts from this year's material rather than from memory. Exporting a page as a PDF handout costs nothing extra.
Common questions
Is it better to take notes by hand or type them?
Handwriting generally produces better conceptual recall because it is slower and forces summarising rather than transcribing. Typing is faster for volume; a mix — typed structure, handwritten diagrams — works well.
What should I actually write in my notes?
Structure, explanations that clarified something, worked examples, and points the lecturer emphasised. Skip anything already in the textbook — a reference to it is enough.
How often should I review my notes?
Briefly the same day, then again after about a week. A short active review the evening after a lecture preserves far more than a long passive reread before the exam.
How can teachers make notes students revise from?
Use clear structure — headings, numbered steps, marked definitions and worked examples — and state what students should be able to do after each topic, so they can test themselves.