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Author:
张哲昕
GeoGebra
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第八周作业1
盈利與虧蝕
龙形曲线-分形龙
比較五件物件的重量
百分數及其應用
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Building Pyramids 建造角錐體
七巧板
以剪貼比較圖形大小 題1的副本
極式:切線方向
半圆面积的微积分动态演示.许兴华数学
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Cone
Arithmetic Operations
Congruence
Differential Calculus
Pyramid