This document supplements a series of training modules that provides a basic introduction to using assistive technology with young children (ages 2 to 7) who have severe disabilities in more than one area of development. The supplement contains suggestions about hearing technologies and listening strategies that improve a child's opportunities to learn from his or her environments. It discusses the types of listening and hearing difficulties occurring among young children with severe disabilities. Hearing technologies, including hearing aids, personal frequency modulation (FM), sound-field FM, and mild-gain hard-wired systems, are described, along with practical suggestions for their use in a child's learning environment. Appendixes provide an assistive technology resource list, an outline of types of hearing loss, national resources for information on assistive listening devices, information on audiological assessment, and a list of 25 additional readings. A videotape, entitled "Assistive Technology: We Can Do It!," was developed to accompany this module and related modules. (Contains approximately 35 references.) (JDD)