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Can you solve the Ragnarok riddle? - Dan Finkel

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Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jörmungandr emerged. It swallowed Valhalla and contorted itself across the land. Odin has just enough power to strike with one final bolt of lightning, and you have the fabled hammer, Mjölnir. Can you two destroy the serpent? Dan Finkel shows how.

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Meet The Creators

  • Educator Daniel Finkel
  • Director Igor Coric
  • Narrator Addison Anderson
  • Storyboard Artist Igor Coric
  • Animator Igor Coric
  • Compositor Igor Coric
  • Art Director Igor Coric
  • Director of Production Gerta Xhelo
  • Editorial Director Alex Rosenthal
  • Producer Bethany Cutmore-Scott
  • Fact-Checker Eden Girma
Additional Resources for you to Explore
Ragnarok. The fabled end of the world, when Norse gods and monsters fight for supremacy. As Thor, you must stop a giant serpent from digesting Valhalla by channeling Odin’s lightning along the length of its body. But can you find a path that will completely destroy it?

The video briefly references the case when all the nodes in a graph have an even number of edges. Will the starting and ending point of an Eulerian circuit on such a graph always be the same node? How do you know? Try drawing examples of other graphs with this property, and see whether the starting and ending points of an Eulerian path are indeed always the same.


Avatar for Felix Lee
Felix Lee • Toronto, Ontario, Canada • COMPLETED LESSON
this was kinda cool yet confusing! cool cuz it literally combines my 2 fave things: norse mythology and riddles! confusing cuz i have no idea what the answer was!
06/30/2020 • 
 8 Responses
 / 8 Updates
Avatar for Joshua Ng
Ok, the answer is that because the fabled hammer controls lightning/storm because it belongs to the God Of Thunder, Thor, you use Mljonir and slide it up the serpent's body and then smash the hammer on its head than when it's weakened because it is banged on electrocuted on it's body, smash the lightning bolt on the head!
07/03/2020 • 
 4 Responses
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Avatar for JONATAN CARBALLO
09/27/2022 • 
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Avatar for OWEN KENTON
The thing was easy............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
09/27/2022 • 
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Avatar for ANDREW PALOMO
09/27/2022 • 
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Avatar for RUBY SPURLOCK
09/27/2022 • 
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09/27/2022 • 
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Avatar for EMERSON JACKSON
I was so confused at first because I kept crossing over and going back on the same place. But then he explained the two nodes with an odd number were your starting and ending points.
09/27/2022 • 
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Avatar for ERIKA HERNANDEZ
Why did the war start anyway?
09/27/2022 • 
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Avatar for ERIKA HERNANDEZ
Why did the war start anyway
09/27/2022 • 
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About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Daniel Finkel
  • Director Igor Coric
  • Narrator Addison Anderson
  • Storyboard Artist Igor Coric
  • Animator Igor Coric
  • Compositor Igor Coric
  • Art Director Igor Coric
  • Director of Production Gerta Xhelo
  • Editorial Director Alex Rosenthal
  • Producer Bethany Cutmore-Scott
  • Fact-Checker Eden Girma