Yesterday we played a game where the children had to throw a ball into a bucket. The nearest bucket earned 5 points, the middle bucket 10, and the furthest 20.
The children found this more difficult than I expected. But their different approaches were interesting. Some of the older boys refused to aim at anything other than the '20' bucket, always missed, and therefore never gained any points at all. Meanwhile, some of the others aimed at the '5' and perhaps '10', and managed to accumulate a good number of points.