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18以內的加法_李樂雯
Author:
Li Lok Man
GeoGebra
New Resources
比較五件物件的重量
斜率的值
龙形曲线-分形龙
正方形雪花图案
百分數及其應用
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Area of Triangle_2
Box method for multiplication
空間坐標系學習單
閱讀月曆
我的第一个绘本
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Mode
Cube
Parallelogram
Poisson Distribution
Trigonometric Functions