How to summarise lecture notes
Summarise lecture notes by identifying what the lecture was trying to teach, keeping only the key ideas and how they connect, and ending with questions you can test yourself on. A good summary is much shorter than the notes and is something you can revise from.
What most advice leaves out
Many students "summarise" by copying their notes in neater handwriting. That keeps the length and loses the point. The work of summarising is deciding what matters, which forces you to understand the lecture. A summary that ends in questions is also ready for revision, while one that ends in paragraphs still has to be turned into something you can practise.
Step by step
- 1
Find the objectives
Start with the learning outcomes on the slides or module guide. If there are none, ask: what should I be able to explain after this lecture?
- 2
Pull out key ideas
For each objective, keep the definitions, mechanisms, steps or arguments that answer it. Drop examples you do not need and repeated points.
- 3
Show the links
Note how ideas connect: this causes that, this is an example of that. Links are what exam questions often test.
- 4
Flag gaps
Mark anything you could not explain in your own words. Those are questions for your tutor or for more reading.
- 5
End with questions
Finish every summary with a few questions on its key points. Next time you revise, answer them before rereading anything.
Common mistakes
- Rewriting the notes at the same length.
- Summarising slides you have not understood, so the summary carries the confusion forward.
- Never turning the summary into questions.
Practise it with Migo AI Students
Paste your lecture notes into Notes Summarizer and it builds a revision pack for your study agent: a concise summary, learning objectives, flashcards and quiz prompts, and it flags where the source detail looks thin. Use Chat Tutor to explain anything you flagged as a gap. Both are free. Check the summary against your own notes, as with any AI tool.
Questions
How long should a lecture summary be?
Short enough to review in a few minutes. If a summary is nearly as long as the notes, it has not done its job yet.
Should I summarise straight after the lecture?
Soon after is best, while you still remember what was emphasised. It also shows you early what you did not understand.
Related guides
- How to make revision notesMake revision notes that are short, organised by the questions you might be asked, and built so you can test yourself from them. Then spend most of your revision time using the notes, not making them.
- How to study from lecture slidesTreat lecture slides as headlines: for each slide, make sure you can explain what it means in your own words, fill in what the lecturer said around it, and test yourself on it. Reading slides alone rarely gives the full explanation.
- How to turn your notes into a quizTurn notes into a quiz by rewriting each key point as a question, mixing question types, and answering them later with your notes closed. Good questions test whether you can use an idea, not just whether you recognise it.
General study advice. Follow your own course’s guidance and your institution’s rules on assessment and AI use.