// Explore JA
日本語 Japanese
Browse published knowledge points by level — 9824 in total.
- Levels
- 5
- Knowledge points
- 9824
- Types
- 4
// How it works
How it works Four steps
From your first answer, the loop revolves around you: assess → attribute → select → review.
STEP 01
Adaptive Assessment
Ten-odd minutes to pin down your true level — no time wasted on what you already know
Under the hood: Question 1 starts at mid difficulty; correct answers raise it, wrong ones lower it; about 20 questions produce a four-dimension initial assessment
STEP 02
Every mistake gets attributed
Tells 'didn't remember' from 'got confused' from 'too careless' — treat the cause instead of drilling endless questions
Under the hood: Hits on a confusion pair are labeled CONFUSION, too-fast answers are labeled CARELESS; the rest is split by knowledge-point weights
STEP 03
The engine picks your next question
Always practicing the gaps that matter most — never random drilling
Under the hood: Weakness + forgetting curve + key knowledge points + skill balance, weighted four ways, with repetition avoided across questions
STEP 04
Review before you forget
Review intervals grow as memory strengthens; the Dashboard explains why each item is due
Under the hood: Reviews scheduled along the memory decay curve: answer smoothly and intervals stretch; answer wrong and you're back in the furnace
// Path
Learning path (work back from your goal)
First recognize, then discriminate, then apply in context — and finally hold it with spaced review.
- STEP 011
Build recognition
See the word → recall its reading and meaning. Fresh words stop being strangers.
- STEP 022
Discriminate
Meaning nuances, collocations and easily-confused words — no more “they look alike”.
- STEP 033
Apply in context
Judge usage in real sentences and passages, and place words correctly.
- STEP 044
Retain
Automatic due review: correct answers stretch the interval, mistakes come right back.
// Catalog
Content by level
Vocabulary · Grammar · Kanji · Reading
N5
651 kpBeginner · basic sentence patterns
N4
1507 kpElementary · everyday grammar
N3
2050 kpIntermediate · natural expressions
N2
2556 kpUpper-intermediate · advanced expressions
N1
3060 kpAdvanced · near-native level
// Preview
See what you'll practice
High-signal samples from the catalog — open one to preview its points and examples.
Core learning features free forever · No credit card required
Start the 20-question adaptive assessment