Guide
Studying from lecture videos.
Watching a recording from start to finish feels productive, but passive viewing is a weak way to learn. Active techniques work much better.
Prepare before you press play
Skim the course syllabus or the slides for the lecture, and write two or three questions you expect it to answer. Knowing what to look for makes it easier to notice the important parts and to recall them later.
Watch in blocks of 20 to 30 minutes and pause between them. Attention drops in long sessions, and short breaks improve retention.
Build an outline as you go
Write the topic of each section, with a timestamp. Include definitions in your own words, and note any example the lecturer works through. Timestamps let you return to a difficult derivation without rewatching everything.
Flag anything you did not understand. Those flags become your list of questions for office hours, a study group, or a second viewing.
Test yourself instead of rereading
After the lecture, close your notes and try to explain the main ideas aloud or on paper. Then check what you missed. Retrieval practice like this consistently outperforms rereading and rewatching.
Turn each flagged confusion into a specific question, such as “Why does the second step require the first assumption?” Specific questions can be answered and checked, unlike “explain this lecture.”
Review on a schedule
Revisit your outline the next day, then after a few days, then after a week. Spacing your reviews helps knowledge move into long-term memory.
Use an AI assistant only as a study aid. It can help you locate where a topic was covered and rephrase an explanation, but it can make mistakes, especially with formulas and specialist vocabulary. Check them against the lecture and your course materials. Read our guide to asking better questions next.