Spaced repetition means reviewing information on expanding intervals so you revisit it before forgetting takes over. It is a scheduling system for memory, not a magic app.
Quick answer
Spaced repetition works by reviewing material after a delay, then increasing the delay each time you remember it. A simple schedule is same day, next day, three days later, one week later, then monthly.
Simple spaced repetition schedule
| Review | When | What to do |
|---|---|---|
| 1 | Same day | Recall the main ideas without notes. |
| 2 | Next day | Answer your hardest questions. |
| 3 | 3–4 days later | Review only missed or weak items. |
| 4 | 1–2 weeks later | Use practice problems or teach-back. |
| 5 | Monthly | Refresh high-value concepts. |
What to put into spaced repetition
- Definitions that must be exact.
- Formulas, facts, and vocabulary.
- Common mistakes and exceptions.
- Decision rules you want to use automatically.
Review card template
Good card format
Front: one clear question. Back: one concise answer, one example, and one note about a common mistake.
How it connects
Spaced repetition should be powered by active recall. Use the learning hub to build the full study loop.
Quick answers
Is spaced repetition only for flashcards?
No. Flashcards are common, but the same principle works for practice problems, summaries, and teaching prompts.
What is the biggest spaced repetition mistake?
Reviewing too much passive material instead of a smaller set of high-value questions.
Can I use a notebook instead of an app?
Yes. A simple review calendar works if you actually follow it.