An experimental study to analyze alternate versions of overhead transparency projectuals designed to teach selected concepts
Pearce, Galen Lee
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The problem of this study v:as to obtain information on the effect of teaching conceptual information using three alternate variations of overhead transparency projectuals. The problem had tv aspects: (1) to determine which of three alternate variations of overhead transparency projectuals accomplished the most learning of conceptual information, and (2) to determine whether color or non-color (black or white) images and positive (white) or negative (black) backgrounds in transparencies most influenced the learning of conceptual information.