Before buying a material, I look at the specs first: number of words included, amount per day, how the audio is heard. A material vague on those three tends to end up shelved. ALC's Kikutan [Basic] 4000 Word Level is a rare vocabulary book where all three are crisp. Headwords: 1,120. Per day: 16 words. Audio: heard on an app. No flash. But what a vocabulary book needs is not flash — it's that tomorrow's amount is already decided, I think.

Chants: A Method Where Your Mouth Learns on the Music

Kikutan's core is chants. To the rhythm of music, audio flows in the order English word → Japanese → English word, and you hum along and memorize. Opposite to a vocabulary book you read silently at a desk: ears and mouth move first. At first you wonder if you can really memorize like this — but after a few days of letting it flow on your commute, the word comes out of your mouth with its rhythm before you recall the meaning. The sound shape remaining first is the strength of a listening material. Even on days with no energy to open a vocabulary book, just putting earphones in is doable. That ease of starting is this method's real power.

The audio holds not only headword chants but phrase and example-sentence audio, too. It doesn't end with the word alone; how it's used inside a short phrase enters your ear as well, which is good. But chants are a device for making recall triggers; left flowing, they don't fix anything. Voice it out loud, test on weekends — only as a set with those two does this material work.

16 Words a Day × 10 Weeks. A Design That Rotates in Week Units

Basic advances at 16 words a day. 16 × 7 days makes 112 words a week, and 1,120 headwords in one pass over 10 weeks. One day's worth, listening to the audio and checking in the book, is about ten minutes. Decide: on weekdays, put in the new 16; on weekends, review that week's batch together — and you won't hesitate. Better not to do 32 words the next day to make up a missed day. Run it strictly by the day and one delay collapses everything. A design you can recover in week units is, honestly, this book's biggest strength.

The rotation is simple: on the morning commute, listen to today's 16; on the way back, listen once more; on the weekend, test with the meaning hidden behind the red sheet. The book is a B6 variant format, holdable in one hand. A size that doesn't get in the way when opened on a train quietly works, too, as a spec for a material you carry every day.

On pass two, change the method. Pick up only the words that didn't come out in the weekend test — the ones you marked on pass one — and rotate them within the same 16-word frame. Redo everything from the start and you'll tire of it and spend the time. A pass two of only the words you missed ends faster than pass one, and doubles as material for judging whether to advance to Advanced as-is. Rather than passing one book many times, finishing it and moving on is what makes a vocabulary book work.

The Audio Is Not CD. You Listen on the 'booco' App

This is the edition checkpoint. The 2012 revised edition came with 2 CDs, but the current 2nd Revised Edition (2019) has no CD. The audio is heard on ALC's study app booco. The 2nd Revised Basic is among booco's supported books and can be used combined with the paper book. Playback-speed adjustment and segment repeat are available on the app side, so if you rotate on your phone alone, it's actually easier than in the CD era. Used-copy edition mix-ups are genuinely common here. People who want to listen on CD: the old edition. People who listen on the app: the 2nd Revised Edition. Decide this much before buying.

One more thing about close listening. For words that didn't come out in the weekend test, re-listening to the phrase audio cut short fixes them differently. For that kind of close listening, a segment-repeat app like Rehear also fits. It's a listening-practice app from the team behind this magazine, and it's just right for the time of re-checking, as phrase sounds, the words you put on your mouth with chants.

Choosing Against Entry and Advanced. Who It Suits, Who It Doesn't

The level staircase goes like this. From the foundation: Entry (2000-word level). The standard for high-school to university entrance exams and the center of adult re-learning is Basic (4000-word level), roughly Eiken Grades 3 to 2 and TOEIC 350–600. Aiming at top universities and beyond: Advanced (6000-word level), and above that Super (12000-word level). If you're torn, starting at Basic is fine. If Basic feels too easy, that's not a failure — it's a graduation sign.

It suits people who want to put words into ear-free time like commutes and housework, and people who can't continue unless the day's amount is decided. It doesn't suit people who want to memorize quietly while writing, or people who want one book to carry a word from knowing it to using it in sentences. Kikutan is a material for raising the rotation count at the entrance; exit practice needs another material. Make that split, and it's a very cost-effective book.

Only three things to decide before buying: edition — the 2nd Revised; listening — booco; rotation — weekdays 16 words + weekend review. Decide, then buy, and Kikutan won't become a bought-and-satisfied vocabulary book. The current print edition is Kikutan [Basic] 4000 Word Level, 2nd Revised Edition.

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