How cool is it to have a UV-Lamp in the classroom laboratory?
It is pretty easy to find a UV-lamp, (if you are in Sweden Class Ohlson has some for pretty reasonable prices) and it opens the daily activity to a whole new spectrum.
You can draw with fluorescent markers an d see the shining colors, you can play with florescent paint, you can play with white objects and discuss why some of them shine and some of them change color. You can even see the small fibers in your clothes or check out your shining teeth!
All ages can investigate and research the effects of a UV-lamp!