Next LessonHow to revise for exams from recorded lectures
To revise from recorded lectures, do not rewatch them. Turn each lecture into short notes by topic, learn each topic’s key terms, test yourself on every topic, and then review what you missed at growing gaps until the exam. Start at least three weeks out if you can: a term of lectures fits into about half an hour a day.
Written by Next Lesson, which does the note-making and the scheduling for you. The plan below works either way.
The plan
- List the lectures and match them to the exam’s topics. Drop anything the exam does not cover.
- Make notes by topic for each lecture, skipping intros, outros and repeats. See how to turn a lecture video into study notes.
- Learn the terms for each topic with flashcards.
- Test each topic with mixed questions about its ideas, from memory.
- Review what you missed on a schedule, a few minutes every day, until the exam.
- In the last week, do mixed tests across all topics, the way the exam will ask.
Why is rewatching lectures a bad way to revise?
An hour-long lecture holds maybe ten minutes of material you need to know, spread through asides, examples and housekeeping. Rewatching costs the full hour, and watching is passive: the ideas feel familiar, which is not the same as being able to write them down in an exam. Notes by topic cut the hour down, and questions turn familiarity into recall. See active recall for why.
How far before the exam should I start?
| Time before the exam | What to do |
|---|---|
| 3 to 4 weeks | Notes and flashcards for two or three lectures a day |
| 2 weeks | A topic test for each topic; daily review of what you missed |
| 1 week | Mixed tests across topics; daily review |
| The day before | A short review of what is due, then sleep |
Spreading the same hours over weeks leaves far more behind than cramming them into the last few days. That is spaced repetition, and it is the reason for starting early.
What if the course also has reading?
Treat each reading like a lecture: notes by topic, then cards, then questions. Handouts, papers and ebook chapters work the same way; see how to turn a PDF or ebook into flashcards.
How does Next Lesson help with revision?
Add each lecture by pasting its link, and each reading by uploading the file. Next Lesson writes notes by topic, cuts the intro, outro and sponsor breaks, and links every line to its moment so you can hear the explanation again. Each topic has flashcards, short lessons and a topic test, and if you already know a topic you can pass its test to skip ahead. What you missed comes back on a schedule. One finished lesson a day keeps your streak.
Questions
Should I rewatch lectures to revise?
Only the parts you did not understand. Rewatching whole lectures is slow and passive. Short notes by topic and questions answered from memory cover the same material in a fraction of the time and stick far better.
How many hours a day should I revise?
Less than most people think, if it is spread out. Half an hour to an hour a day over three or four weeks beats long days in the last week, because each topic gets reviewed several times with gaps in between.
Can I revise from recorded lectures at double speed?
For a first pass, often yes. But speed does not fix the main problem with watching, which is that it is passive. Notes and self-testing do more for the exam than watching faster.
What if I only have a few days?
Go straight to questions. Test yourself on each topic, read the notes only for what you get wrong, and review those again the next day. Recall practice is still the best use of short time.