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加法

Author:陳冠彰

義守財數101級製作

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兩組對邊相等的四邊形
算柱 (兩位數)
長方體平面投影 (Codex版)
拼砌四邊形
畫出對稱圖形

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七巧板貓咪2
扇形的弧長與面積
面積3
分數乘法
玖数小学数学（思维拓展）

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Geometric Distribution
Geometric Transformations
Ratios
Cylinder
Diagrams

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