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# 수와 연산 01 생일을 맞히는 계산 마술 ··················································································3 02 신기한 카프리카 수와 연산 ···············································································7 03 ‘4’ 네 개로 만드는 자연수 ············································································11 04 손가락 구구단 ································································································15 05 크로스 곱셈법 ································································································19 06 옛 사람들의 곱셈 ···························································································24 07 수학식으로 퍼즐 놀이를?! ··············································································30 08 덧셈만 알면 나는야 곱셈왕 ············································································37 09 예쁜 무늬에 숨겨진 비밀 ···············································································41 10 색으로 배우는 약수와 배수 ············································································46 11 분수 계산기?! ································································································52 # 도형과 측정 12 뫼비우스의 띠 자르기 ····················································································59 13 삼면접시 ·········································································································63 14 한 번만 잘라서 만든 정다각형 ·······································································67 15 하나의 전개도 두 개의 도형 ··········································································74 16 평면에서 입체로, 무브폼 ················································································80 17 원이 그리는 예술, 써클아트 ···········································································86 18 안과 밖이 바뀌는 큐브 ··················································································94 19 무한반복 피라미드 ··························································································98 20 빈틈없이 가득 채우는 재미 ·········································································102 21 두 개의 기둥을 품은 하나의 기둥 ·······························································106 22 새를 품은 에그 퍼즐 ···················································································112 23 일곱 개의 조각이 이루는 도형 ····································································118 24 색종이로 만드는 삼각자 ··············································································122 25 넓이가 늘어나는 마술퍼즐 ···········································································126 26 크기가 다른 두 물통 ···················································································130 27 각도기로 별 그리기 ·····················································································134 28 종이접기로 만드는 곡선 ··············································································140 29 퍼즐로 배우는 직사각형 넓이 ······································································147 30 벌들이 찾은 최적의 구조 ············································································152 31 DIY 경사계 ·································································································157 # 변화와 관계 32 베다 방진으로 만든 무늬 ············································································162 33 A시리즈 종이에 담긴 비밀 ··········································································168 34 바코드와 체크디지트 ····················································································172 35 규칙을 따라가면 예술이 되는 스트링아트 ····················································176 36 돌돌 감으면 풀리는 비밀 ············································································180 37 쉿! 우리만 아는 비밀이야 ···········································································184 38 파스칼 삼각형에 숨겨진 규칙 ······································································188 39 탑을 옮기면 세상이 끝난다! ········································································193 40 도형 속 수의 규칙 ······················································································198 41 끊임없이 되풀이 되는 구조 ·········································································205 42 몬드리안의 그림 속 수학 ············································································211 43 수학으로 배우는 음계 ··················································································217 44 규칙을 알면 항상 이기는 게임 ····································································223 45 식물도 수학을 한다고?! ··············································································229 46 종이를 접어 만드는 프랙탈 ·········································································235

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