Students make a wheel that can display them several sound resources, the decibels made by that sound, and allowable time they may be exposed to that degree of sound. Although holding circle “one”, change circle ”2” until finally a picture is usually noticed in the “Audio” window. Instantly throughout http://suspendertights66.mpeblog.com/18177027/how-loud-is-too-loud-can-you-be-too-loud-in-bed-an-overview