https://padlet.com/hingchan1024/upfnls0hrdmi 圓周的認識 en-us 2017-03-02 12:11:46 UTC 2025-12-22 08:43:49 UTC hello@padlet.com hingchan1024 https://padlet.com/hingchan1024/upfnls0hrdmi/wish/157292177 2017-03-02 12:24:31 UTC https://padlet.com/hingchan1024/upfnls0hrdmi/wish/157292177 hingchan1024 https://padlet.com/hingchan1024/upfnls0hrdmi/wish/157292395 https://www.geogebra.org/material/simple/id/92382#material/88510 ]]> 2017-03-02 12:25:48 UTC https://padlet.com/hingchan1024/upfnls0hrdmi/wish/157292395