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乘法1
Author:
chen mingchuan
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等的四邊形
判斷球體
sanjiaohanshu
兩組對邊相等和有直角的四邊形
Discover Resources
弧度
哈里斯螺旋 (Harriss Spiral)
模擬3D物件
平面鏡成像 Image of Plane Mirror Reflection
小遊戲(Butterfly)
扇形動畫
Discover Topics
Straight Lines
Integers
Histogram
Tangent Line or Tangent
Logarithm