수학박사 / 수학영재교육 전문가 / "지오지브라 따라하며 배우기", "알지오매스 따라하며 배우기", "GSP5 따라하며 배우기", "하노이탑", "변형 하노이탑", "수학을 알면 보이는 세계IDEA", "수학의 골든타임" 등의 저자!!

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