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商高定理2
Author:
李春培
商高定理2
GeoGebra
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兩位數除以一位數（二）
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
兩位數加法
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畫三角形 題4b
Angry Bird
圍周
複數：正方形內的正方形
Completing the Square (Part 6)
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Straight Lines
Subtraction
Pyramid
Trigonometric Functions
Symmetry