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edmundem
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Copy of 方格紙上畫平行四邊形3
Activity
edmundem
Copy of 平行四邊形的面積
Activity
edmundem
Copy of 劉徽的「割圓術」
Activity
edmundem
Copy of 圓周公式應用題2
Activity
edmundem
Copy of 圓周公式應用題1
Activity
edmundem
Copy of Dot paper
Activity
edmundem
