Australia has one of the highest rates of incidence and mortality due to skin cancer in the world. Exposure to the sun also has a beneficial side. The beneficial effects are relatively few, but they are essential to a person's well being. It is well known that exposure to small amounts of UV radiation are beneficial for the human body and important in the production of vitamin D[subscript 3]. This investigation will give students the opportunity to measure erythemal UV radiation in full sun and in the shade to determine how this can be potentially beneficial. An important outcome of this investigation will be to illustrate that some exposure to sunlight is necessary for long-term human health. (Contains 1 table and 3 figures.)