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凸透鏡的成像（理想）
Author:
joeyliaw.tw
GeoGebra
New Resources
錐體建築師
四邉形 (四年級) 教師版
兩位數加法
【案例】2018年全国1卷理科12题
找出對稱軸
Discover Resources
分數的圖示
task5
正方形
軌跡練習1
兩圓滾動軌跡
Discover Topics
Tree Diagrams
Similarity Transformation or Similarity
Natural Numbers
Addition
Plane Figures or Shapes