Study methodMemory
Spaced repetition for engineering exams: why it beats re-reading
Dr. Faisal QayyumMaterials scientist & lecturer in mechanical engineering6 min read
Spaced repetition means reviewing material at increasing intervals instead of all at once. Combined with testing yourself, it is one of the most reliable ways to make revision last — and it is the opposite of cramming.
Why spacing works: the forgetting curve
Memory decays quickly at first and more slowly later. Each successful recall just before you would forget flattens the curve, so the information survives longer for less total effort. Reviewing too soon wastes the review; reviewing too late means relearning.
How to apply it to engineering revision
- Make each review a recall attempt, not a re-read: cover the answer and try first.
- Review new material the next day, then after a few days, then weekly.
- Give more time to what you get wrong and less to what is easy.
Doing this by hand means rebuilding a schedule every week. The app does it for you: after you answer, each question returns on its own due date, so the review queue is always the work that matters today. Open the app or read the six-week plan.