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几何与勾股定理
Author:
叶明杰
GeoGebra
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第八周作业
撒针估算面积实验
百分數及其應用
第三周作业效果演示
比較五件物件的重量
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不規則填色
内切花瓣
All in one (Centres of triangle)
重心
高考椭圆题的动态演示2.许兴华数学
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Multiplication
Trigonometric Functions
Curve Sketching
LCM and GCD
Inequalities