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This article describes the work of an interactive video development group in the Graduate Programme in Educational Technology at Concordia University.lt discusses the design and development of an interactive videotape system which will be used to teach contamination assessment and decontamination of radioisotopes to biochemistry students.The paper concludes with a discussion of relevant issues concerning the development of interactive video in an academic setting.As part of their curriculum, undergraduate students studying biochemistry at Concordia University often carry out laboratory experiments involving the use of radioactive isotopes.The risk of radioactive body contamination and the potential for damage to the sensitive equipment used for detecting radioactivity are important concerns to the teaching staff of these students.Traditionally, a series of manuals, slide-tape presentations and in-class demonstrations have been used to train students in correct laboratory procedures.Upon evaluating the effects of these instructional strategies, technicians in both the Chemistry and Biology Departments were not entirely satisfied with the results of the training.In a continuing attempt to improve instruction and training within the faculty of biochemistry, training needs were identified and potential solutions were identified through a series of discussions.As a result of these discussions, an interactive videotape training

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