spkwan – Resources – GeoGebra

2B origami lesson
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繪畫角
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Origami Pentagon
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加和減
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Addition & Subtraction
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速率 - 蝸牛運動會: 研習 & 修訂
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折線圖: 研課 & 修訂
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optical illusion
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對稱(Symmetry)
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Introduction to Slope, Distance-Time graph
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A Course for 12-15
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Fraction Pie
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Sherlock Holmes' problem
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Circle & Circumference
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The digit sequence 123456789
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All the Digits
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除加/減混合算題
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Magic Triangle
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一道奧數題
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Pinhole camera
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Circle & Circumference
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時間
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optical illusion
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Cuboids & their Nets
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