This study examined the characteristics of school systems and programs that have been successfully involved in change over the past 10 years and that are continuing to update services through external sources. Four models of innovation are outlined: the traditional research-development and utilization (RDU) model, the Linkage Model (Havelock…

The development of videodiscs for science instruction in public schools requires a recognition of the unique characteristics of the public school environment and sensitivity to the persistent problems associated with science content instruction. This report discusses the conceptualization, development, and formative evaluation of a series of…

This paper examines the evolution over three decades of the educational development (ED) movement in Canada. An informal history of ED was constructed, using published documents about ED and personal interviews with 8 educational developers who played key roles in programs and ED centers; e-mail responses were received from ten other developers.…