Using GPS units, small groups participate in a scavenger hunt to find an object that you have hidden. They use coordinates for stopping points along a pre-planned path to get to the final cache. This is a terrific activity to include in a geography, mapping, or technology lesson. It can be simplified or added to for almost any age group and several suggestions are made to help you accommodate your class. If you have access to global positioning system units, this would be a challenging and memorable lesson.