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chuck.ncyu

  • Proof Without Words

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  • Proof Without Words

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  • 170821 三角形內角和

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  • 三角形三內角和

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  • 5-s-03-能認識圓心角,理解180度、360度的意義,並認識扇形

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    chuck.ncyu

  • 4-n-18-正方形和長方形的面積與周長公式

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  • 5-s-01-能透過操作,理解三角形三內角和為180度

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