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滑桿動畫
Author:
葉冠和
GeoGebra
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算柱 (兩位數)
近似值：有效數字
sanjiaohanshu
兩組對邊相等的四邊形
兩位數除以一位數（一）
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切3塊拼成正方形
三個外切圓
教案一
探索二次函数的性质
「相似三角形」任务3的副本
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Scatter Plot
Linear Functions
Logic
Tree Diagrams
Inequalities