The evolution of evidence-based practice in augmentative and alternative communication (AAC) has occurred via two different but related routes: the conventional research-to-practice route and the more common practice-to-research route. This article defines both routes with examples of each and discusses potential problems that may arise when…

The study investigated early years teachers' understanding and use of graphic symbols, defined as the visual representation(s) used to communicate one or more "linguistic" concepts, which can be used to facilitate science learning. The study was conducted in Cyprus where six early years teachers were observed and interviewed. The results…

The study examined whether the modality effect is caused by either high visuo-spatial load or a lack of temporal contiguity when processing written text and pictures. Students (N = 147) viewed pictures on the development of tornados, which were accompanied by either spoken or written explanations presented simultaneously with, before, or after the…

Visual literacy, the ability to interpret and create external representations (ERs), is essential to success in biochemistry. Studies have been conducted that describe students' abilities to use and interpret specific types of ERs. However, a framework for describing ERs derived through a naturalistic inquiry of biochemistry classrooms has not…

Despite a decline in popularity within US society, posters continue to hold a prominent place within middle and high school science classrooms. Teachers' demand is satisfied by governmental and non-profit science organizations that produce and disseminate posters as tangible products resulting from their research, and instruments to communicate…

Explains how digital technology can be used as a tool for teaching students the skills of observation, questioning, information gathering, classifying, predicting, and hypothesis testing. (Author/SOE)

A study investigated the effectiveness of stereochemistry lap-dissolve projection as an aid to students in developing three-dimensional imaging and whether certain visual orientation tasks could be correlated with aptitude. Students found the slides helpful, and a modest correlation of achievement and visual skills was found. (MSE)

Still pictures, slides and motion pictures were used in this study to present concepts in biology involving time, space and motion. (Author)

When learning-disabled high school students (N=22) were taught about astronomy by either presenting key concepts with a visual spatial display or by presenting concepts with texts, tests measuring short-term mastery of content favored students taught with the visual display. No differences were found between the groups on transfer or maintenance.…

Sixty hearing-impaired students, aged 12-22, studied one of four instructional formats describing basic science concepts. Comprehension gains were measured using a pretest-posttest procedure. Formats which featured highly pictorial content and simplified English produced significantly higher mean gain scores than formats with less pictorial…