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加法
Author:
Cobie Lo
Topic:
Addition
GeoGebra
New Resources
画直线等分三角形的面积
第八周作业
四邉形 (四年級) 教師版
兩位數加法
球體建築師
Discover Resources
實驗與觀察
伸縮矩陣
Quartiles and Box Plot (two data sets) 四分位數與框線圖（比較兩組數據）
貸款
GriffithsTheorem
加法有圖案
Discover Topics
Polynomial Functions
Scalene Triangles
Pie Chart or Circle Chart
Inequalities
Similar Triangles