IDENTITY 網站：
https://project-identity.hk
影片內容：
00:00 - 片頭
00:05 - 咩係數列? | what are sequences?
02:32 - 常見的數列 | common sequences
07:41 - 找出數列的通項 | finding the general terms of sequences
Playlist：
S1-S3 Maths | 代數式簡介 | Introduction to Algebraic Expressions
https://www.youtube.com/playlist?list=PL1Pv0-rhcQx6VJnBZGES1DwdWuXJzKLOK
