This is the third revision of a primer on all aspects of educational technology. It offers an authoritative overview of approaches and interpretations as well as detailed descriptions of specific techniques. Topics covered include: the nature of educational technology; basic educational strategies such as the teacher/institution-centered approach…

This booklet begins by examining the role played by evaluation in course and curriculum development, and then shows how the basic "error elimination" approach advocated by the philosopher Karl Popper can be used as a basis for the on-going evaluation of instructional systems. Next, two contrasting paradigms of evaluation are described,…