The clues for this Sudoku are the product of the numbers in adjacent squares.

Got It game for an adult and child. How can you play so that you know you will always win?

This article takes the reader through divisibility tests and how they work. An article to read with pencil and paper to hand.

Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...

A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.

Many numbers can be expressed as the sum of two or more consecutive integers. For example, 15=7+8 and 10=1+2+3+4. Can you say which numbers can be expressed in this way?

A game in which players take it in turns to choose a number. Can you block your opponent?

What is the smallest number of answers you need to reveal in order to work out the missing headers?

Factors and Multiples game for an adult and child. How can you make sure you win this game?

Sets of integers like 3, 4, 5 are called Pythagorean Triples, because they could be the lengths of the sides of a right-angled triangle. Can you find any more?