What is Spaced Repetition

Spaced repetition sounds technical, but the core idea is simple:

Review something right before you’re about to forget it.

That timing—not too soon, not too late—is what makes memory stick long-term.

1. Why Spaced Repetition Works

Your brain naturally follows the Forgetting Curve:

• Right after learning → you remember a lot
• After a day → you forget most of it
• After a week → almost gone

Spaced repetition interrupts that forgetting at the perfect moment.

2. What It Looks Like in Practice

Instead of cramming:

• Day 1 → learn “苹果”
• Day 2 → review
• Day 4 → review
• Day 7 → review
• Day 15 → review

Each time you recall it, the memory gets stronger → intervals get longer.

3. The Critical Rule (Most People Get This Wrong)

👉 Don’t review when it’s easy.
👉 Don’t review when it’s already forgotten.

You want this feeling:

“I almost forgot… but I can still recall it.”

That struggle is what strengthens memory.

4. Active Recall (The Engine Behind It)

Spaced repetition only works if you pull the answer from memory, not just recognize it.

Bad:

• Seeing “苹果” → “oh yeah, apple”

Good:

• Seeing “apple” → forcing yourself to recall “苹果”

This is Active Recall.

5. The Easiest Way to Start (No App Needed)

You can do this manually:

• Write words on flashcards
• Sort into 3 piles:
  • Easy (review later)
  • Medium (review soon)
  • Hard (review again today)

But honestly, apps make this much easier.

6. Using an App (Recommended)

Apps like Anki automate everything:

• You rate each card:
  • Easy
  • Good
  • Hard
• The app decides when to show it again

It’s basically a memory algorithm for your brain.

7. How to Use It Correctly (This Is the Real Strategy)

Most people fail here. Do this instead:

Keep new cards small

• 10–20 new words per day
• More = overload → quitting

Always recall before flipping

Pause. Think. Struggle a bit.

If you flip too quickly, you’re not learning.

Use full phrases, not single words

Instead of:

• 苹果 = apple

Use:

• 我想买苹果 (I want to buy apples)

This builds usable memory.

Review every day (even 5–10 minutes)

Consistency > intensity

Missing days breaks the spacing effect.

8. What It Feels Like Over Time

Week 1:

• Feels slow, slightly frustrating

Week 2–3:

• Words start sticking longer

Month 1+:

• You randomly remember words without effort

That’s when it “clicks.”

9. Why This Is Especially Powerful for Chinese

Chinese vocabulary:

• Doesn’t share roots with English
• Requires more repetition

Spaced repetition:

• Prevents forgetting characters
• Reinforces tones + meaning over time

It turns a “memorization problem” into a system.

The Big Insight

Spaced repetition isn’t about studying more.

It’s about:

Studying at the right time.