Vocabulary:
Plump means that you don´t get any points

Main part:
3-4 players. You throw the dice and out of the three dice you are suppose to form a number between 1- 42 by using the four rules of arithmetic. The two dice of the same colour represent positive numbers and the dice of a different colour represents a negative number. You mark the number you have chosen on the playing board with a cross.
Now you get 1 point. But you get 1 more point for every adjoining square that is already crossed out. You can get as many as 9 points, if you try hard to think which the best number to cross out is. You continue as long as you can find squares which are free. So when you come to that point when you can't find any free square you have to say pass and now you get the PLUMP.
Now you look at the playing board and you make a cross over the O under the word Plumps.
When you get 5 plumps you lose the game and the winner is the one with the highest points or scores!

Round up: Have a discussion in the class about which operations the pupils used most.

Observations:
We also tried playing the game with two negatve dice and one positive dice.