Practice · ふくしゅう — chapters 10 to 19, and the counters
Flash Cards
A practice deck, not a lesson. Nothing here is new — every word was taught, glossed and checked in its own chapter. This page exists to stop them slipping away again.
1.How to use it
The card shows one side. You retrieve the rest before you turn it — that beat, where nothing on screen is helping you, is the entire exercise. Then you tell it the truth.
| Control | What it does |
|---|---|
| Front — Mixed · かな · English · العربية | Which side you are asked from. The back always shows all three. Mixed is the default and the one to use: it picks a different side per card, so you cannot settle into one direction. |
| In play | Which sets are dealt. All of them on is the point of the page — the words were learned in blocks and have to survive being shuffled. The last one, marked ±, is not a chapter: it is the counter readings that change. |
| Fresh session | Thirty cards drawn from everything in scope, weighted so the ones you keep missing come round more often. |
| Trouble words | Only the words currently catching you out, hardest first. Greyed until there are some. |
| space | Turns the card. 1 is Knew it, 2 is Missed it — and neither key does anything until the card is turned, so a stray press cannot cost you a word. |
| 🔊 | Says the Japanese, or the Arabic. The card speaks itself the moment you turn it — never before, or hearing it would be the answer. |
Be honest with Missed it
Half-remembering counts as missing. The deck is only as useful as the record you give it, and the cost of an honest miss is that the word comes back — which is what you want. The cost of a generous Knew it is that it does not.
2.The deck
The deck needs JavaScript. Every word in it is listed in its own chapter's lesson — the table below links each one — with its full card and its note.
3.What it remembers, and where
Each card carries a wrong-score. Missing it adds one, up to five. Knowing it takes one off, down to zero. That score is all the weighting runs on:
| Card | How often it comes up |
|---|---|
| Never seen | 2.5× |
| Seen, score 0 | 1× — the baseline |
| Score 1 | 3× |
| Score 3 | 7× |
| Score 5 — the ceiling | 11× |
The decay is the important half. Without it, a word you fumbled once in July would still be crowding the deck in December, and the trouble list would slowly become the whole course. Getting it right twice gets it out.
Your lifetime counts — how many times known, how many missed — never decay. They are shown on the back of a card you have met before, and they break ties in the trouble list.
Where this is stored
In this browser, in localStorage, under one key. It is never
sent anywhere — there is no account, no server and no sync, which is also why
it does not follow you to your phone. Clearing your browser data clears it,
and Forget my history at the end of a session clears it deliberately.
If storage is blocked — Safari private browsing does this — the deck still
works and simply stops remembering.
4.Where these words come from
Eight chapters and one set that is not a chapter, kept separate rather than poured into one. A set whose premise is “the words of chapter 12” would stop being true the moment chapter 13 was appended to it.
| Chapter | Words | What it covers |
|---|---|---|
| Lesson 10 | 53 | The calendar — seven planets, twelve numbered months |
| Lesson 11 | 42 | Introducing yourself — two ways to say every person |
| Lesson 12 | 42 | Pointing — これ・それ・あれ and the の row |
| Lesson 13 | 41 | Places, floors and prices |
| Lesson 14 | 38 | The working day and the clock — of its 46 words, 8 were already dealt by an earlier chapter |
| Lesson 15 | 27 | Numbers and counting — of its 32 words, 5 were already dealt by an earlier chapter |
| Lesson 16 | 32 | Going and coming — three verbs of motion, the fleet, the station and the two promised dates. Nothing here was dealt by an earlier chapter: its four repeats live in lessons 4 and 7, outside this deck |
| Lesson 17 | 45 | Verbs and their objects — eleven verbs, the meals, the shopping basket, the drinks and the media they act on. Nothing here was dealt by an earlier chapter: its seven repeats live in lessons 4 to 7, outside this deck |
| Lesson 18 | 41 | Giving and receiving — three verb pairs, the hand and its tools, the katakana desk, the family named twice over, and the trip. Nothing here was dealt by an earlier chapter: its six repeats live in lessons 4 to 7, outside this deck |
| Counters ± | 20 | The counter readings that change — いっぷん, さんがい, よじ. Not a chapter: it is the 35 irregular cells of the counter sheet, of which 15 are already dealt by lesson 10's calendar and lesson 15's people. The 45 regular readings are deliberately absent — にさい is the number and the counter joined, and drilling it teaches nothing |
A word that appears in two chapters is dealt once, from the earlier one, so a session never asks you the same thing twice.
5.Sources
- Spaced repetition, Gwern Branwen — read this one if you read only one. It is the argument for why a deck that shows you what you keep missing beats a deck that shows you everything equally, and why self-rating honestly matters more than the algorithm does.
- Roediger & Karpicke, Test-Enhanced Learning (2006) — the retrieval-practice finding this page is built on: being tested on material beats re-reading it, and the gap widens the longer you wait to measure.
- Interleaving — why Mixed is the default front, and why every chapter on is better practice than one chapter at a time even though it feels worse.
- Jisho.org, over JMdict/EDICT (CC BY-SA 4.0) — every reading, gloss and commonness tag on every card, checked when its chapter was built.
- The cards themselves are the lessons' own word sets, unchanged. Nothing on this page was re-glossed for it.