Spaced Repetition Flashcards: How to Actually Remember New Words

Why cramming doesn't work

You look up a word, feel a small click of understanding, and move on — and a week later it's gone. This isn't really a memory problem, it's a scheduling problem: anything reviewed only once gets treated as unimportant and starts fading almost immediately.

Cramming a word list the night before a test fights this for a few hours, then loses. The fix isn't reviewing more — it's reviewing at the right moment: just as a word is about to slip away, not right after you already know it and not so late that it's already gone.

What spaced repetition actually does

Spaced repetition is a scheduling trick: instead of reviewing every word every day, you review each one right before you're likely to forget it, then push the next review further out. Each successful recall makes the word more stable, so the gap before the next review can grow — a day, then a few days, then a few weeks — while a forgotten word resets to the start.

The result is that a handful of minutes a day covers far more words than one long session ever could, because you only spend time on the words actually at risk of being lost.

The Leitner box, the simple version

SeoJae Story's study plan uses a classic version of this called a Leitner system: every flashcard sits in one of a few boxes. A new card is due immediately; each time you recall it correctly it moves up a box and its next review is pushed further out — roughly a day, then about a week, then a few weeks, then a month or more. Get it wrong, and it drops straight back to the first box.

You never have to plan any of this yourself. Open the study plan and it already knows which cards are due today — everything else stays out of sight until it needs you.

Grade yourself honestly: Again, Good, Easy

After you reveal a card, you choose one of three grades. "Again" means you didn't really know it — it goes back to the start, which is normal and not a failure. "Good" means you got it, maybe with a beat of hesitation. "Easy" means it took no effort at all, and pushes the next review out further still.

The temptation is to grade generously so the pile of due cards feels smaller. Resist it — an honest "again" costs you one more short review later, but a dishonest "good" is exactly how a word quietly falls out of a system built to catch it.

Where the cards come from

You don't build a deck from scratch. Every lesson comes with its own vocabulary list, and any word you tap while reading can be saved straight into your study plan with its example sentence attached — so the card always carries the context you met the word in, not just an isolated translation.

That context matters more than it seems: recalling a word is much easier when the card also shows you the sentence it appeared in, rather than a bare word-and-translation pair with nothing to hang it on.

A five-minute daily habit

This is genuinely all it takes:

• Read one story, tapping words you don't know and saving the ones worth keeping.
• Open the study plan and clear whatever's due — usually a couple of minutes.
• Grade honestly. "Again" is not failure; it's the system working.

Where to start

Read a story in the library, save a handful of words as you go, and check your study plan tomorrow — that first due review, a day later, is where spaced repetition actually begins.