Cover the definitions and produce each word from its example sentence instead, because the six hundred words in the first two books are ones you already recognise, and recognition is the one thing these books cannot check. What the band is quietly full of is second jobs. Run in run a bath, take in take it personally: neither meaning is the one the entry gives you, and the second jobs are where the band pays.
The fastest way to see what a book-one word really carries is to watch a few of them carry a day.
One flat in Leeds, fourteen jobs
Priya's first week in a shared flat in Leeds. The flat has run out of milk, the flatmate who noticed gets to run a bath while the kettle waits, and Priya, who slept through two alarms, is about to run late for her shift. Three sentences, one word, three meanings: used up, filled, behind time. Not one of them is a person moving quickly, which is the meaning the entry hands you.
Take behaves the same way. Sam, the flatmate with the bath, is generous about the queue: take your time. Priya decides not to take it personally when her oat milk goes missing anyway. Spending minutes, feeling insulted: take is in both sentences and carries neither meaning on its own.
Put and get run the household's harder feelings. Priya has put off the dentist twice since moving, which is delay, and has learned to put up with the noise from the road, which is tolerance. She is still trying to get over a cold she brought from home, and when Sam explains that the boiler is called Keith, she does not get the joke. Recover and understand, from a word the entry defines as receive.
The rest of the band fills the week. Somebody has to set up the printer for a cleaning rota nobody will read. The landlord's one rule after ten at night is keep your voice down. Priya will turn down the offer of a Saturday shift, because an essay is due on Monday and she intends to make the deadline. And when the four housemates finally reach an agreement about the rota, every word in that sentence is from book one, and no entry for reach says a word about agreements.
Why the shortest words carry the most
A short word has more jobs than a long one, and the first band is where the shortest words live. Run, take, put, get and set each fill pages of a dictionary because a thousand years of English kept loading them. A rare Latin-rooted word from the sixth book usually has one meaning, so ticking it off means owning it; ticking off run means owning one job of a dozen. The entry is honest, and it is a tenth of the word.
The fourteen jobs above are the door into two bigger rooms. A verb whose meaning a particle rewrites is a phrasal verb, and almost every phrasal verb in English is built on this band: get up, put off, run into: verbs a preposition rewrites. The habit of words keeping fixed company, the reason a deadline is made or met and never done, is which words English puts together, and which it never does.
Where it stops: three months spent confirming
The stall in a numbered set is a decision made in week one: start at book one, because one comes first. Three months later the learner has moved carefully through words they already recognised, enjoyed every easy session, and stops somewhere in book three, the first place the set would have started paying. Nothing warns them. High marks and pleasant sessions are exactly what confirming feels like, and the same signal, read right, was an instruction to skip forward.
Testing production rather than recognition
As of 2026, Clozemaster is the cheap way to find out which jobs actually arrive when called. It hands you a sentence with one word missing, drawn from frequency bands, so this band can be tested in a few sessions, and the free tier is enough for that. It replaced the gap-fill at the back of a unit, which you answer once with the answers a page away. Its sentences come from a public bank and some are stilted; for this purpose it hardly matters, because the question being asked is whether a very common word arrives under a little pressure.
What going wrong looks like
It looks like the Tuesday above, seen from the other side. You know reach means to arrive somewhere, the house meeting needs a result, and reach an agreement does not come, so you build something longer and it works and nobody notices, including you. Somewhere a workbook has a tick against reach. The tick was for the one job nobody needed that evening.
The band above this one is where the set stops confirming and starts teaching: mid level words for opinions, work and abstract ideas. How the six books pace as a set is the core word list, worked through one book at a time. The open question these two books leave is what a tick against a twelve-job word is worth, and the honest count is the one from the flat in Leeds: count the jobs you can produce, not the words you can recognise.