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Peer reviewedVander Wall, William J. – Engineering Design Graphics Journal, 1991
An experimental group of students from an introductory engineering graphics class was required to watch 30 videotapes that presented basic concepts of engineering graphics, whereas a control group had no access to the videotapes. No differences were established between the groups. (JJK)
Descriptors: Audiovisual Instruction, Control Groups, Drafting, Educational Technology
