Substantial progress has been made in the development of assistive technology devices, including adaptations to existing devices that facilitate activities of daily living that significantly benefit individuals with disabilities of all ages. These devices increase involvement in, and reduce expenditures associated with, programs and activities that facilitate communication, ensure independent functioning, enable early childhood development, support educational achievement, provide and enhance employment options, and enable full participation in community living for individuals with disabilities. Access to such devices can also reduce expenditures associated with early childhood intervention, education, rehabilitation and training, health care, employment, residential living, independent living, recreation opportunities, and other aspects of daily living. This book reviews the IDEA’s assistive technology requirements, dispels common misconceptions regarding AT, and provides examples of the use of AT devices and services for children with disabilities and to highlight the different requirements under Part C and Part B of IDEA.