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Bjorkquist, David Carl – 1965
The purpose of this study was to determine the relative effectiveness of pictorial drawings and scale models in teaching principles of orthographic projection. A sample of 60 students were randomly selected from a population of sixth grade boys in four Minneapolis public schools. They were divided into three IQ levels and assigned to four groups:…
Descriptors: Comparative Analysis, Control Groups, Doctoral Dissertations, Drafting
