If your child is young, play Triolet at its most basic level as it is a great way of helping children work out number bonds for 15 by adding two or three numbers.

The easiest description of the game is ‘scrabble with numbers’. You have a gridded board and a bag of 81 numbered tiles. The task, for up to 4 players, is to make sets of three tiles sum to 15. This is a fun way of developing mental calculation and observations skills. In addition, bonus score opportunities and the ability to score in two dimensions add a strategic and tactical element to the game, along with a keen competitive edge.

The game has simple rules well explained with plenty of diagrams of example game layouts. There is also a useful website dedicated to the game.