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Sudoku generator

Pick the size, the level, and how many puzzles you want on the sheet. Each grid is dug until exactly one solution remains, so the answer key can never disagree with the puzzle.

The 4x4 uses digits 1 to 4 and bigger cells, meant for hands that still write large.

How to use the sudoku in class

Sudoku is not arithmetic, and it is worth saying plainly: no adding, no times tables. What it trains is logical reasoning and persistence, which is a skill rather than a topic.

When it earns its place

  • Start of a lesson to bring the room down a gear, especially after break.
  • For whoever finishes early, since each student takes the time they need and nobody waits.
  • Logical reasoning work, which the curriculum asks for in Maths without needing large numbers.
  • Substitute lessons, since the rule explains itself in thirty seconds.

Which size to choose

  • The 4x4 uses only the numbers 1 to 4 and suits Early Childhood and the 1st and 2nd grade, including children still settling counting.
  • The 9x9 is the classic one, from the 4th grade up.
  • Easy and medium are a real gap: easy solves by direct elimination, medium needs two lines held at once.
  • Up to 3 boards per sheet. Three easy ones fill a lesson for a student who picks it up fast.

When you print

  • Digits print large, sized for a child's hand to write over them.
  • Each board is seeded from the title and the level, so a new title gives another puzzle at the same difficulty.
  • No colour, no heavy shading: it prints the same on an old printer.
When one loose sheet is not enough

The sheet is ready.
What about the rest of the lesson?

With HeyProf you send the topic on WhatsApp and receive the whole lesson plan, with the sheets and the answer key alongside it, already aligned to your official curriculum. Cancel renewal whenever you like.

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