<!-- Origin Article URL: http://www.wretch.cc/blog/sandyET/35020939 --> <embed allowscriptaccess="never" src="http://www.youtube.com/v/jGf1EraF4YM?hl=zh&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed> <br><br> <embed allowscriptaccess="never" src="http://www.youtube.com/v/J0yRRDGSb7I?fs=1&hl=zh_TW" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed> <br><br> 量圓周長 <br><br> <embed allowscriptaccess="never" src="http://www.youtube.com/v/C3mjEaWVZo4?fs=1&hl=zh_TW" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="3445"></embed> <br><br> 量直徑 <br><br> <embed allowscriptaccess="never" src="http://www.youtube.com/v/mvWLyNBv6i0?fs=1&hl=zh_TW" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="3445"></embed> <br><br> 圓周長與直徑的比值 <br><br> <embed allowscriptaccess="never" src="http://www.youtube.com/v/lv7HoiWGpfw?fs=1&hl=zh_TW" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed>
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