PURPOSE: A device and a method for explaining other languages by an education terminal are provided to increase effects of learning other languages. CONSTITUTION: A polyhedron generating unit(102) generates a polyhedron corresponding to a fixed sentence component among sentence components of other languages. A property information extracting unit(103) extracts feature information of a sentence component corresponding to each side of the generated polyhedron. A display unit(104) displays different feature information of the sentence information on each corresponding side of the polyhedron.
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