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Function: get_footer

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Function: require_once

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[수학체험실] 정사면체 비눗방울 놀이와 정사각형으로 정삼각형 만들기
수학동아 2018.12.27 23:09 조회 850
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

 

정삼각뿔 구조물을 비눗물에 담갔다 빼면 정사면체를 관찰할 수 있어요. 비눗방울 놀이도 즐기고, 정사각형을 4조각으로 분할해 정삼각형도 만들어 보세요. 

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