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Abstract ▼ AI-Helper

The purpose of this study was to investigate the types of explanation of the concept of gravity and the direction of gravity in Korean science textbooks, to categorize them, and to propose proper explanations for each grade. For these, 44 textbooks were analyzed. The explanation of the concept of gr...

The purpose of this study was to investigate the types of explanation of the concept of gravity and the direction of gravity in Korean science textbooks, to categorize them, and to propose proper explanations for each grade. For these, 44 textbooks were analyzed. The explanation of the concept of gravity was categorized into five types: ‘the force through which both the earth and an object attract each other’ is gravity or the earth’s gravity, ‘the force through which that the earth attracts objects’ is gravity or the earth’s gravity, and ‘the resultant force of universal gravitation and centrifugal force by the rotation of the earth on its axis.’ The explanation of the concept of the direction of gravity was categorized into four types: ‘center of the earth’ ‘plumb direction into the center of the earth’ ‘plumb direction’ and ‘not center of the earth.’ Most science textbooks in the same grade had different explanations and some textbooks even grave two types of explanation in one chapter of the same textbook. As a whole, the explanations in the textbooks deepened as the grade level increased but some textbooks used the same explanation as the fused in the former grade. These mean that the explanations in the current textbooks is proper nether in horizontal consistency nor in vertical grade associated with cognitive development. Therefore, some of the problems identified in this study should be modified which developing science textbooks.

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