The Add on 9 Machine can be used by individuals or groups or enlarged for using with the whole class during the numeracy period.

Children can give the answer, and then have the fun of turning the wheel to see if it was correct.

Turn the back wheel to bring up the different number facts.

If the window is only cut out on three sides, and folded back to make a little door, the 'machine' can also be easily used for subtraction of 9, as well as addition.

You can download the pieces and instructions to print out and make the equipment up.