by 배진수
Published in 한국학, 37(3) (01.09.2014)

by 서민주, 서유민, 정혜윤, 이경화
Published in 韓國學校數學會論文集 (31.03.2023)

by 이현경(Lee, Hyun Kyung)
Published in 교양교육연구 (31.10.2013)

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Published in 한국초등수학교육학회지, 28(4) (30.11.2024)