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河北省2016年25题
Author:
辛贺华
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數加法
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
四邉形 (四年級) 教師版
Discover Resources
Addition / Subtraction of 3 Directed Numbers
Quiz on Joint Variation 聯變：測驗
小四平面圖形學習單
ABC 2
教學成果
Discover Topics
Continuity
Right Triangles
Definite Integral
Hypothesis Testing
Surface