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七巧板.ggb
Author:
郭勇
GeoGebra
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【案例】2018年全国1卷理科12题
異分母分數減法
三位數除以一位數（一）
判斷球體
找出對稱軸
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棋盤的 L 形覆蓋
step
旋转文本
量度身高
F5_聯立二元一次不等式
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Mathematics
Solids or 3D Shapes
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Median Line