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搖擺鞦韆放風箏
Author:
張怡雯
GeoGebra
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畫出對稱圖形
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
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求 a + b 的最大值？
國徽
rotational symmetry_1
Rotation: Rolling Motion的副本
第六次:20190412
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Random Experiments
Conic Sections
Similar Triangles
Differential Calculus
Difference and Slope