4E Math Duration by Noorhani Bte Adenan https://padlet.com/noorhani/duration en-us 2017-09-26 19:53:47 UTC 2017-09-26 20:20:45 UTC hello@padlet.com Look at the two solutions below. noorhani https://padlet.com/noorhani/duration/wish/191447514 Which one is more elegant?]]> 2017-09-26 19:55:57 UTC https://padlet.com/noorhani/duration/wish/191447514