Diagram describing texts are integral part of science and engineering subjects including geometry, physics, engineering drawing, etc. In order to understand such text, one, at first, tries to draw or perceive the underlying diagram. For perception of the blind students such diagrams need to be drawn in some non-visual accessible form like tactile…

Students with autism and related developmental disabilities who do not speak are often taught to use some type of augmentative and alternative communication (AAC) system, such as a voice output communication aid (VOCA). One problem with such devices is that the person may be unable to communicate when the device is not readily accessible. We first…

Each person who is deaf-blind--whatever her sensory, mental, and physical abilities--deserves the opportunity to become literate in all the ways of which she is capable. Reading and writing are especially crucial for one whose world is narrowed because of vision and hearing losses. Literacy can enable such a person to exchange information and…

Students who are deaf and hard of hearing have special needs that must be accommodated before they can fully benefit from various types of classroom presentation technology. An optimal classroom situation for learners who must depend primarily on visual input includes careful consideration of factors such as room set up, legibility of the media,…