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Seongsan High School, Daegu 704-934, KoreaAbstract: The purpose of this study was to compare 10th grade students’ understanding of concepts about the plates’motions depending on the different spatial ability. Based on previous studies and literature reviews, two instruments wereselected and used in this study. The Spatial Perception Test developed in Korean Testing Center was applied to measurestudents’ spatial ability. Another instrument for testing students’ understandings of plates’ motions consists of a total of 10items. The instruments were distributed to 118 students who were 10th graders in metropolitan city. The results are asfollows: First, a correlation coefficient between conceptual understanding of plates’ motions and spatial ability was r=0.439(p< .01). It indicates that conceptual plates’ motions and spatial ability have a moderate relationship. The students weredivided into two groups (high and low) by spatial ability. The independent t-test was performed and reveals that thestatistically significant difference between high and low groups. On the other hand, the 6 students (3 higher spatial abilitystudents and 3 lowers) were selected and interviewed individually to find the differences in their understanding of theconcept of plates’ motions. The findings from interviews indicate that most students recognized about concepts of trenchand ocean ridge, a rise and drop of the mantle, and divergent and convergent boundaries. However, students hadmisconceptions about section of trench and ocean ridge. In addition, the students who had higher spatial ability knew themore proper concepts about the creation and extinction of plate, crustal movements, and bottom of the ocean extension,whereas the students who had the lower spatial ability had misconceptions.Keywords: plates’ motion, spatial ability, misconception:    10              .          ·.   KTC    20 .           10 .    10  118   ,                    .      3   3    .   . ,         ,  r=0.439 (p< .01)        .      ·

An Analysis of 10th Grade Students' Understanding of Concepts about the Plates' Motions according to the Level of Spatial Ability