並前往https://wlts.edb.hkedcity.net/filemanager/file/mathematics/tc/ks1/ks1m11/KS1-M1-1-%E8%AA%8D%E8%AD%98%E9%A6%99%E6%B8%AF%E7%9A%84%E7%B4%99%E5%B9%A3.pptx