THREE DIFFERENT METHODS OF TEACHING DESCRIPTIVE GEOMETRY WERE EVALUATED. AN ANALYSIS WAS MADE OF (1) THE ACHIEVEMENT OF 176 STUDENTS TAUGHT BY THE MULTIVIEW PROJECTION METHOD, (2) 172 STUDENTS TAUGHT BY THE PICTURE METHOD PLUS MULTIVIEW PROJECTION, AND (3) 188 STUDENTS TAUGHT BY THE FIRST TWO METHODS AND ANIMATED FILMS. THE BASES FOR ANALYSIS WERE DAILY WORK, DRAWING PLATES, QUIZZES, REVIEWS, WORKBOOKS, QUESTIONNAIRES, AND A FINAL EXAMINATION. STUDENTS AMONG THE THREE POPULATIONS WERE EQUIVALENT IN TERMS OF (1) PAST PERFORMANCES, (2) FIELD OF CONCENTRATION, AND (3) GENERAL ACADEMIC ABILITY. NO SIGNIFICANT DIFFERENCES IN OVERALL ACHIEVEMENT WERE CLEARLY DISCERNIBLE AMONG POPULATIONS. SEVEN RECOMMENDATIONS ARE OFFERED FOR FUTURE RESEARCH. (HB)