Analysis for Triangles in Elementary School Curriculum and Textbook: Focusing on the Instructional Teaching and Learning Elements of 2-D Shapes (평면도형의 교수·학습 요소에 따른 삼각형에 관한 초등학교 교과서 분석)
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- Education of Primary School Mathematics
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- v.24 no.4
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- pp.233-246
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- 2021