How to learn from recorded lectures
Methods you can check, not productivity advice: how to take notes you can re-read, how to turn a three-hour recording into something searchable, and what to do the night before an exam.
How often to review lecture notes: a spacing schedule
How often to review depends on how long the material must last: within 48 hours of the lecture, then gaps of a tenth to a third of the time left before the exam.
Lecture playback speed: does 1.5x hurt learning?
Watching lecture recordings at 1.5x does not measurably hurt recall in most studies; at 2x, transfer and cognitive load get worse. How to choose a speed.
Active recall: how to study a recorded lecture
Active recall means closing your notes and answering a question from memory before you check. Here is how to build it from a recorded lecture.
Searchable transcripts: how to study a 3-hour lecture
A searchable transcript turns a three-hour lecture into text you can jump through by keyword and timestamp. Test yourself from it, then check the sentence.
How to take notes at a lecture you can study from
Good lecture notes are short cues you can test yourself from, not a transcript. Write definitions, examples and questions, then review by self-testing.