Abstract
3-D Perception is a program for Macintosh computers that is designed to be used in geology and structural-geology courses. The program, designed with HyperCard, presents a series of structured exercises which test the student's ability to visualize the shape of objects in three dimensions from two-dimensional drawings. The ability to think in three dimensions is an essential skill for the interpretation of geological maps, cross-sections, and block diagrams. At the beginning, 3-D Perception presents the student with some preliminary forms which he has to fill in with information regarding the geology courses he has taken. These data will help in the final assessment of his performance. The two testing sections of the program follow: Part 1 consists of 28 cards of common objects and geometrical shapes for which the student has to indicate one possible relative position (top, front, side) among the four presented. Part 2 includes 22 problems on geological block diagrams and cross sections which must be comp...
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