Real Working Stethoscope - Set of 4Students can use a real, working stethoscope to listen to the sound of a beating heart! This convenient set of 4 stethoscopes is perfect for any classroom setting. Students can use these stethoscopes to play and develop skills of doctors or vets, while learning how their heart and lungs really work. The stethoscope is a device to be able to listen to the internal sounds of an animal or human body. Let students discover the sounds of their own body by