The booklet is intended to provide practical information on hearing aids for hearing impaired children, their families and teachers. Illustrations are provided to describe the hearing process. The nature of hearing loss is considered in terms of types (conductive, sensori-neural, and mixed), causes, degrees, and educational implications. Four different types of hearing aids are briefly summarized, component parts (microphone, amplifier, receiver, and battery) are described, and ways in which an aid facilitates hearing are noted. Suggestions for hearing aid care touch on cleaning, performing routine "listening checks," and identifying common problems and their causes. A final section lists hints on successful hearing aid use, including a three-phase plan for initial use. (CL)