Here are the links to the games we played yesterday which involve adding and subtracting positive and negative numbers. The games also require strategy as you need to think where are the good squares to put the counters first!
You can choose to play against the computer or against a friend using the drop-down menu at the bottom of the games. We got very excited when we beat the computer every time yesterday but that was a very good run of success!!
If you want to play the game with two normal 6-sided dice, click on the first image.
The second game uses two dice: one has -1, -2, -3, 4, 5, 6; the second has 1, 2, 3, -4, -5, -6. The second game is more challenging because it has a wider range of possible answers.