Demonstrates one method for finding parallel tangents to a cylinder based on geometric properties of the three dimensional representation of the cylinders. Uses rotational transformations to obtain a three dimensional view. Provides a starting point for those studying geometric methods as a lead into computer assisted drafting. (CW)

Discusses coordinate systems, units of measure, scaling and levels as they relate to a database generated by a computer in a spatial rather than planer location. Describes geometric-oriented input, direct coordinates, transformations, annotation, editing and patterns. Stresses that hand drafting emulation is a short-sighted approach to…

Contrasts the role of scientific diagrams in school classrooms with their role in the world of practicing scientists. Uses the role differences as a source for a new approach. Describes some practical strategies for classroom implementation. (Author/YP)

Designed for individualized use in an applied physics course in postsecondary vocational-technical education, this series of six learning modules is equivalent to the content of a three-credit hour class in surveying and drafting technology, architectural drafting technology, building construction technology, and civil engineering technology.…

Studies whether traditional drafting equipment (TRAD) or computer aided drafting equipment (CAD) is more effective. Proposes that students using only CAD can learn principles of drafting as well as students using only TRAD. Reports no significant difference either on achievement or attitude. (MVL)