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Author:
Henry Leung
GeoGebra
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第八周作业
异形操场
第八周作业1
第三周作业效果演示
百分數及其應用
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最小平方法
學習單：平行四邊形面積
Compare areas by cutting shapes Q3
结果10以内加法
S3 Ex4.3 Q02(3D圖)
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Arithmetic
Addition
Percentages
Mathematics
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