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Author:
liqiang liu
,
Steve Phelps
GeoGebra
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畫出對稱圖形
柱體建築師
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
錐體建築師
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波的干涉 Wave Interference
積分求面積
Copy of 七巧板綜合
厘米和毫米
BkD_act15_04c
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Continuity
Rectangle
Linear Regression
Prism
Percentages