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翰林數學_2下_CH3-1_三角形的外角和
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翰林數學
GeoGebra
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湖南省张毅郴数字教研工作室 logo
中華民國國旗 (Codex╱2026.10.06)
國旗 (作圖步驟直接餵給 Claude)
Nested spiral octagon
算柱 (兩位數)
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色彩視覺藝術：三色彩帶
方格紙上畫梯形3
均分除法（分數÷整數）
小數乘法
排數咭遊戲_多位數
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Parametric Curves
Geometric Transformations
Perimeter
Equilateral Triangles
Addition