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拖拉小正方体
Author:
吕胜
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
找出對稱軸
画直线等分三角形的面积
兩位數除以一位數(一)
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Concept of Similarity 相似的概念
例題11
直線系
五边形的旋转平铺(迭代加序列)
S0G5平均不等式(无字证明)
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Constructions
Straight Lines
Diagrams
Linear Regression
Expected Value