TED-Ed
How to defeat a dragon with math - Garth Sundem
TV-PG
2013 • E15 Jan 15, 2013 10mHaving trouble remembering the order of operations? Let's raise the stakes a little bit. What if the future of your (theoretical) kingdom depended on it? Garth Sundem creates a world in which PEMDAS is the hero but only heroic when in the proper order.