Start with 4x4
A 4x4 grid uses the numbers 1 to 4 and is divided into four 2x2 boxes. Every row, column and box must hold each number once. The grid is small enough to see at a glance, which makes it a friendly place to learn the rule.
Introduce the rules
Work the first puzzle together. Point to a row and ask which numbers are already there and which are missing. Then do the same for a column and a box. Let the child place the first number, even if it takes a minute.
If a mistake appears, ask them to check the row, column and box for a repeated number instead of simply correcting it.
Talk through the reasoning
The most useful habit is explaining why. Ask questions such as why a 3 cannot go here, or which cell is the only one left in this box. Saying the reason out loud helps the idea stick and shows you where the child is unsure.
- Which numbers are missing from this row?
- Where can the 2 go in this box?
- What made you choose that cell?
Move to 6x6
When 4x4 feels comfortable, try 6x6 puzzles. They use the numbers 1 to 6, and each box is 2 rows by 3 columns. The rule is the same, but there are more cells to track. Both sizes are available on the kids' page of this site.
Pictures and colors
For a variation, replace numbers with shapes, animals or colors. Children can draw the symbols or use stickers or colored pencils. The logic stays the same, and it can be a good way in for those who are not yet comfortable with numbers.
Classroom and rainy days
Print a small stack and hand them out as a quiet activity, an early finisher task or a station. At home, a few puzzles and a box of pencils make an easy rainy-day activity. Print the answer key separately so adults can check quickly.
Have a correction or a suggestion? Tell the studio.