Make a custom crossword puzzle for the classroom in seconds. Generate the words and clues from a topic, pick a ready-made subject pack, or type your own — then play it on the whiteboard or print a clean A4 PDF with an answer key. Free to try.
I used this on a space topic where the sticking point was the vocabulary — the children understood the science well enough, but the technical words kept sliding away from them. So I ran the crossword as a research task rather than a test. Class library books stayed out on the tables, and their own exercise books were open beside them, so they could hunt back through work from a fortnight earlier for a word they had used once and then lost. Some worked alone, most drifted into pairs. The looking-back was the lesson. The grid was just what made them do it.
First week back this September I used it the other way round: a crossword about me, for a class I was just meeting. Where did I go to university? What’s my wife’s name? Where did I teach last? What’s my favourite food? (Chilli con carne — which several of them refused to believe until they had counted the squares.) Ten minutes of morning work, and they learned more about their new teacher than any circle-time introduction has managed — because they had to work for it. A crossword is only as engaging as what it is about, and nobody knows what your class cares about better than you.
How do I make a crossword puzzle?
Choose how to build it — generate words and clues from a topic, pick a preset pack, or type your own pairs — then preview, and play it on the whiteboard or print it as a PDF.
Can I print my crossword?
Yes — export a printable A4 PDF with the clues and a separate answer sheet, ready to photocopy. It’s free to try.
Can I use my own words and clues?
Yes — pick “Write Your Own” and enter each word with its clue; the grid lays itself out around them.
Is it free?
Yes — building, playing and printing crosswords is free. Generating words and clues from a topic is part of Sage Teachers Pro.
What can I make a crossword about?
Any subject — spelling and vocabulary, topic revision, key terms in science or history, languages, and more.
A crossword only holds together where words share letters, so the word list matters more than the topic. Words of four to eight letters sit best: shorter than four and there is nothing to cross, longer than nine and the grid spreads out with big empty corners.
Three things quietly break a grid. Words that share no common letters — a vocabulary list heavy on unusual consonants will not interlock, however good the words are. Hyphens, apostrophes and two-word phrases — the grid has one square per letter and nowhere to put punctuation. And a list that is all one shape, such as ten six-letter nouns, which gives the generator very little to work with. Plurals and past tenses are worth keeping in for the opposite reason: that extra s or ed hands the grid another crossing point.
These are starting points, not rules. If the preview looks sparse, take out the longest word first — it is usually the one refusing to cross anything.
The table stops at Year 6 because that is where I teach, not because that is where the app stops. The same generator handles secondary key terms or a language department’s vocabulary list just as well — a crossword is only ever as hard as the words you feed it, and adults finish them just as happily as children do.
Write definitions, not riddles. Cryptic clues rely on conventions primary children have never been taught, so they turn the puzzle into a guessing game and the quick finishers into the only finishers.
Four things make a clue answerable. Signal the word class — starting with “A liquid that…” tells a child they are looking for a noun before they have read the rest. Keep it to one sentence; if a clue needs a comma and a subclause it has become a comprehension question. Never use the answer, or a word from the same root, inside the clue — “evaporation is when water evaporates” teaches nothing. And pitch the clue below the reading age of the answer, so the difficulty sits in the recall rather than in the decoding.
Nearly always, it is spelling. A child can know perfectly well that the answer is Mediterranean and still be unable to put it in the grid, and unlike a worksheet a crossword stops them dead — one word they cannot spell blocks every word that crosses it. For a first crossword, or for a class with a wide spelling range, print the answers as a jumbled word bank at the bottom of the sheet. The thinking stays in matching clue to word; only the spelling is handed back.
The other two are quieter. Clues that read harder than the answers, so the puzzle tests reading rather than the topic. And a sparse grid from a word list that will not interlock, which looks like a hard puzzle but is really an unfair one, because there are no crossing letters to help anybody who is stuck.
The mistake I keep making is setting the age to the age of my class. A crossword isn’t as hard as it reads, because the clues hand out help a comprehension never does — the crossing letters, the number of squares, the word bank if you print one. Try the band above your class first and drop down if the preview looks brutal. Undershoot and everyone finishes in four minutes, which teaches nothing and leaves you twenty minutes to fill.
Set the age of your class and the difficulty in the setup, then adjust the word list rather than the clues. Easier: fewer words, shorter words, a word bank on the sheet, or hand out the answer sheet to a supported group so they are matching rather than recalling. Harder: more words, longer answers, no bank, and clues that need a step of inference — “the gas plants give out in daylight” rather than “a gas in the air”. The same word list can carry a whole class if you print two versions and only change the bank.
Five jobs, mostly. End-of-topic revision, where the crossword is a recap that does not feel like a test. Spelling consolidation, because the grid forces letter-by-letter accuracy in a way a spelling list never does. Subject vocabulary — science and history key terms, or a term’s worth of language vocabulary. And early finishers and cover work, where a printed puzzle with an answer sheet needs no explaining by whoever is in the room.
And the ragged ten minutes after break, which is the one I reach for most. Children come back from the playground at different times, for all sorts of reasons, and the choice is usually to hold the whole class in limbo until the last one is in, or to start properly and have half of them miss it. A crossword on the desk solves it. The children who came back on time have something worth doing instead of waiting, nobody gets told off for the arithmetic of a wet playground, and by the time the room is full everyone has done something.
Prefer a letter grid to clues? Try the Word Search Maker, which hides the same vocabulary in a grid of letters to find. Mixing the letters up instead? Scrambler and Anagram Smash turn the same word lists into quick-fire lesson starters. And for matching pairs the class cuts out and assembles, make a Tarsia puzzle.
Written by a practising primary school teacher, and part of the free-to-try resource makers on Sage Teachers. Last checked August 2026. Building, playing and printing crosswords is free to try.