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分數認識
Author:
Tse Sir
GeoGebra
New Resources
球体的体积推导（优化版）
兩位數加法
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
判斷球體
Discover Resources
三角函數
方塊圖_李樂雯
ghseh 二次函數的開口方向
[S3] a GeoGebra file created by a pre-service teacher Peter (pseudonym)
柱體＿