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GeoGebra
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兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
拼砌四邊形
算柱 (兩位數)
三位數除以一位數(二)
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螢橋國中80137陳英瀚
認識圓
正四面體
maths
正20面體展開
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Normal Distribution
Mode
Arithmetic Operations
Integers
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