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2018 DSE Q.17
Author:
BBSS4CD
GeoGebra
New Resources
第八周作业
撒针估算面积实验
第八周作业2
平行線的判定
龙形曲线-分形龙
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小二、小三_時間（學生版）
三角形的分割與組合(1)
proof24 羅文頡
三角形的面積
S3 Ch4.1 立體圖形(3D圖) - 十字形棱柱(ViewA)
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Algebra
Perimeter
Sequences and Series
Integers
Upper and Lower Sum or Riemann Sum