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Duchastel, Philippe; Waller, Robert – Educational Technology, 1979
The use of illustrations in textbooks is reviewed and seven functions of explicative illustrations are presented--descriptive, expressive, constructional, functional, logico-mathematical, algorithmic, and data-display. (RAO)
Descriptors: Illustrations, Textbook Content, Textbook Preparation, Textbooks
Duchastel, Phillippe C. – Educational Technology, 1978
Describes the relationship of the textbook author to its illustrator and proposes that either the educational technologist, the author, or the designer begin to systematically consider illustrative strategies which will enhance learning. The attentional, explicative, and retentional roles of illustrations and the need to coordinate them are…
Descriptors: Design Requirements, Illustrations, Instructional Materials, Photographs
