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Author:
keith leung
,
Tim Brzezinski
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GeoGebra
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第八周作业
拼砌四邊形
四邉形 (四年級) 教師版
四邊形的特性
画直线等分三角形的面积
Discover Resources
Reflection
Prism
邊角關係
小遊戲
一个函数的零点个数.许兴华数学
Discover Topics
Standard Deviation
Exponent
Cuboid
Dilation
Arithmetic Operations