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星球運動模擬
Author:
連琨銘
GeoGebra
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拼砌四邊形
四邉形 (四年級) 教師版
算柱 (兩位數)
画直线等分三角形的面积
兩組對邊相等和有直角的四邊形
Discover Resources
ISOSCELES TRIANGLE
摺長方形
星星
乘法加工
抛物线动态（不一样的做法）
Discover Topics
Root
Fractions
Hypothesis Testing
Curve Sketching
Reflection