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小一時鐘小幫手 2023
Author:
Chan Pui Chuen
GeoGebra
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正方形雪花图案
常见四边形是否是双心四边形
中华人民共和国国旗
折扣
撒针估算面积实验
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整數加減向量示意
vit3301
反射(鉛垂線、水平線及斜線) Reflection (vertical line, horizontal line and line)
拋物線1--焦點法
雙曲線2 焦點法
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Planes
Linear Equations
Statistics
Rectangle
Reflection