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翰林數學_2下_CH3-1_多邊形的內角和
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翰林數學
GeoGebra
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算柱 (兩位數)
sanjiaohanshu
拼砌四邊形
兩位數加法
球體建築師
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二次函數圖形
估算分數對應的百分數
銳角三角函數
包含除法（1 ÷分數）
同側AP-BP最大值
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Arithmetic Operations
Linear Equations
Linear Programming or Linear Optimization
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