Testing and evaluation are important components of effective instructional software development. Many evaluation approaches today are multifaceted, employing a combination of methodologies and multiple data collection techniques. In this paper, several approaches to evaluation are discussed. Computerized tracking systems, videotape recording…

This paper examines the dual coding hypothesis, a model of the coding of visual and textual information, from the perspective of a mass media professional, such as a teacher, interested in accurately presenting both visual and textual material to a mass audience (i.e., students). It offers an extension to the theory, based upon the various skill…