Crossword puzzle
Create a crossword puzzle online for free from your own words and clues: type them in and the grid builds itself while you watch, ready to style, share, print and embed.
You bring Words + clues 3 min
Theme · Math puzzles
Math puzzle makers: arithmetic practice that does not look like a worksheet.
Generated sums at the level you choose, sudokus in 5 sizes, and the card and sentence generators with numbers in them. Difficulty is a setting; the puzzles are made for you.
6
generators in this theme
4
operators — add, subtract, multiply, divide
5
sudoku sizes, from 2×2 to 4×4
Calculation · live preview
Pick the level, the operators and the steps per sum; the questions are generated, not typed. Feedback per sum is a switch.
Start from what you already have
— pick the input, we shortlist the generators.The math generators
Every generator here works from content you already haveMatch them up
Create a matching game: cards of text, image or audio that players drag into place beside their match — or join with a line.
You bring Cards to match 3 min
Memory
Create a memory game online: classic pairs to flip and match, made from any mix of text, image and audio cards.
You bring Pairs to flip 3 min
Calculation
A page of sums that reveals a hidden sentence as players solve them.
You bring A sentence 2 min
Fill in the gap
Type your sentences, click the words that become gaps, and the exercise is done.
You bring Sentences 3 min
Sudoku
A sudoku generated in seconds, at the difficulty you choose.
You bring Nothing 10 sec
How teachers use the math theme
Primary · arithmetic
Ten minutes of tables, a different set every time
A calculation puzzle at the class's level regenerates its sums, so the early finishers get a fresh round instead of the answer key.
Secondary · revision
Match the expression to its value
Memory and Match them up take a sum on one card and the answer on the other — fractions, powers, whatever the unit is.
Logic · any age
A sudoku for the whiteboard
A 2×2 with pictures for the youngest, a 3×3 for the rest, and a battle mode when two players want the same board.
Activity ideas
All ideas → Calculation
Sums that spell a sentence
Every answer is a letter. Get the sums right and the message writes itself across the top.
Sudoku
Mini sudoku
A 4 × 4 grid with one solution, and each number confirmed as it goes in. Sudoku for ages five and up.
Sudoku Premium
Picture sudoku
The same logic with pictures instead of digits: one of each in every row, column and box.
1 Pick the generator
Sums and sudokus generate themselves; the card and sentence types take your own expressions and answers.
2 Set the level
Difficulty, operators and steps per sum for calculations; grid size and difficulty for a sudoku — previewed live.
3 Share or track
A link or QR code for the class, and with tracking on, a result per player showing which sums went wrong.
Questions about math puzzles
Do I have to write the sums myself?
Not for a calculation puzzle or a sudoku — both are generated from the level you set. The card and sentence generators use what you type.
Can players see which sums they got right?
Yes — feedback per calculation is a setting, and the results page keeps every answer with tracking on.
Can a sudoku use pictures instead of numbers?
Yes — give every value an image and the board becomes a picture sudoku, in any of the 5 sizes.
Other themes
same editor, different kind of thinkingSet the level once. The sums write themselves.
Free for 60 player sessions a month. No card, no trial clock.