Many experimenters, starting with Ernst Mach in 1883, have reported that if a device alternately sucks in and then expels a surrounding fluid, it moves in the same direction as if it only expelled fluid. This surprising phenomenon, which we call "Machian propulsion", is explained by conservation of momentum: the outflow efficiently transfers…

Deaf children with cochlear implants (CIs) represent an intriguing opportunity to study neurocognitive plasticity and reorganization when sound is introduced following a period of auditory deprivation early in development. Although it is common to consider deafness as affecting hearing alone, it may be the case that auditory deprivation leads to…

Computer-supported collaborative learning has an unexploited potential of becoming an effective learning method for pupils with intellectual disabilities. This paper aims at showing how some specific requirements of this target group may be met by structuring a learning situation with the help of "floor control," which restricts the opportunities…

Parents of children with special needs are beginning to realize that a home designed for their child who might now use a wheelchair may benefit them as well in the future as they "Age in Place". As the boomers age and Medicare and Medicaid seem to possibly decline in the not so distant future as a source of funding for elderly and special needs…

This research is based on the Library Services for People with Disabilities Policy, which was approved by the American Library Association in 2001. The policy identified focus areas for libraries including library services, facilities, collections, and assistive technology. Library websites frequently convey this information to users. Our study…

Fourteen students with visual impairments in Grades 5-12 participated in the field-testing of AnimalWatch-VI-Beta. This computer program delivered 12 prealgebra math problems and hints through a self-voicing audio feature. The students provided feedback about how the computer program can be improved and expanded to make it accessible to all users.…

This commentary includes a brief discussion of issues raised by the articles and systematic review contained in this special issue addressing technology applications for persons with severe developmental disabilities. Topical areas include a discussion of: (1) a need to compare "high tech" with "low tech" applications, (2) procedural fidelity, (3)…

This article challenges educational computing researchers and teacher educators to consider a merger between universal design for learning and technological pedagogical content knowledge to create a practitioners' model to prepare teachers to graduate with the knowledge, skills, and dispositions needed to teach the full spectrum of learners.…

Infants 12 months of age or older who have a severe to profound hearing loss frequently receive cochlear implants. Given the inherent challenges of assessing children of this age, this study aims to determine how Listening and Spoken Language Specialists Certified Auditory-Verbal Therapists (LSLS Cert. AVT™) gauge the progress of very young…

Students with varying backgrounds and learning disabilities enter today's classrooms. Teachers may not be prepared to recognize and handle the needs of these students. The purpose of this study is to examine the research on teacher preparedness with the goal of increasing public awareness of the needs of this student population. A review of the…

The current uses of audio podcasts, the accessibility of audio podcasts, and the benefits of using audio podcasts in U.S. online college courses as a form of access to visual course content that would be otherwise unavailable to learners with vision loss had not been examined and described. To provide instructional designers with a firm basis for…

This, the 31st annual National Child Count of Children and Youth Who Are Deaf-Blind, is the first and longest running registry and knowledge base of children who are deaf-blind in the world. Begun in 1986 on behalf of the U.S. Department of Education, it represents a thirty-plus year collaborative effort between the National Center on…

You probably recognize this standard definition of a comet: "a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit." Add an accompanying photograph or diagram, and students "get" what a comet is, right? Science textbook publishers expect students to…

To ensure the best outcomes for students with moderate and severe disabilities, K-12 educators need to understand what constitutes good instructional practices and how to apply them in any classroom, with any curriculum. All the how-to guidance they need is in this accessible text on systematic instruction, a highly effective teaching approach…

This study investigated how a child with early cochlear implantation interacted with peers in his inclusive preschool setting. A qualitative case-study framed in a socio-linguistic framework guided the data collection and analysis. Data collection included detailed field notes, classroom free play observations, informal student interviews, teacher…