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| Illustrations | 1 |
| Textbook Content | 1 |
| Textbook Preparation | 1 |
| Textbooks | 1 |
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| Educational Technology | 1 |
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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
