This game is great for developing addition skills. It's easy to learn and fun to play.
We have a lovely wooden version of this game but, it occurs to me, you could make one with nine pieces of card, or paper, on which are written the numbers 1 to 9.
It's quite helpful to have the numbers written on both sides of the cards. Make sure you know which is the 'back' and which is the 'front' of your cards, since you will need to turn them over.
You also need two dice.
Start with all the cards facing up.
The first player rolls the dice and totals up the dots. They then turn over any combination of cards which add up to that total.
The same player rolls the dice again, turning over different cards to make the new total.
If cards 7, 8 and 9 have all been turned over, the player may choose whether to roll one or two dice.
The same player continues their turn until they no longer have cards available to make the total shown on the dice.
The player then adds up the total of the remaining, unturned cards and that is their score.
The other player(s) take(s) a turn and the winner is the person with the lowest score.