My Teaching Aids

tweety and sylvester sliding puzzle game » slide puzzles

This is suitable for Year 1, 2 and 3 pupils to arrange the numbers in order to make the picture complete. It's fun to try!

Sudoku » Puzzle games

This is suitable for Year 4, 5 and 6 pupils to find out the way to put in all the numbers with the rules and regulations. Let's try it!

Sudoku Tips

Basic Strategy

There are two basic strategies that you can use:

1) Find the only possible position of a number in a group (or row, or column), e.g.:

In the third group, consider the only possible position of the number 9:

As the first two rows of this group already have 9's, the only possible position of a 9 in this group is in the remaining block of the third row:

2) Find the only possible number that can appear in a block, e.g.:

Consider the highlighted block:

It cannot be 2, 3, 4, 5 (because they are in the same group), it cannot be 6, 7, 8, 9 (because they are in the same row), the only possible number is 1: