Por que o sistema métrico é importante - Matt Anticole
12:53
Is The Metric System Actually Better?
5:47
Who decides how long a second is? - John Kitching
22:38
Why I will NEVER use the Metric System
7:57
The real reasons the US refuses to go metric
7:21
Who Invented the Metric System (and Why It Isn’t As Perfect as You Think)
14:15
The Sad Story of the Smartest Man Who Ever Lived
5:20
This tool will help improve your critical thinking - Erick Wilberding
5:08