Negative Numbers using Golf

I did a lesson on negative numbers using Golf. I gave the class an actual Golf score card that I had filled in from the local Golf Club and then got them to work out the scores for the Golfers. This gets the class using negative numbers both adding and subtracting them to work out the golfer's scores. I give the class a blank scorecard to stick in their books and they copy the details of the actual golf scorecard I give them on to this. The powerpoint explains to the class what a 'birdie' 'bogey' etc are and how to calculate the scores.