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湯圓rice ball
Author:
陳正鴻
GeoGebra
New Resources
找出對稱軸
四邉形 (四年級) 教師版
美國國旗 (Codex 版)
拼砌四邊形
近似值：有效數字
Discover Resources
Apollonius Problem 5 CPP pocelet
分數與小數
DSE Circle-ACT02B Angle at centre and circumference
Choose the most suitable 'improvised units'(中間人)
classifying triangles
Discover Topics
Cone
Multiplication
Upper and Lower Sum or Riemann Sum
Bar Chart or Bar Graph
Pythagoras or Pythagorean Theorem