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勾股定理证明
Author:
万超杰
GeoGebra
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三位數除以一位數（二）
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
四邉形 (四年級) 教師版
兩位數除以一位數（一）
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風車
空間三坐標平面101.12.22
Lab 3 Task 8: Regular Pentagon Construction
Pythagorean Theorem Proof: Shearing
奠基
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Complex Numbers
Translation
Constructions
Poisson Distribution
Trapezoid