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Can you solve the time travel riddle? - Dan Finkel

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TEDEd Animation

Let’s Begin…

Your professor has accidentally stepped through a time portal in his physics lab. You’ve got just a minute to jump through before it closes and leaves him stranded in history. Your only way back is to grab enough colored nodules to create a new portal to open a doorway through time. Can you take the right amount of nodules to get back to the present before the portal closes? Dan Finkel shows how.

Additional Resources for you to Explore

What if you wanted to activate enough chrono-nodules to open two doorways through time? What’s the minimum number of chrono-nodules you would need to be sure you could do it? (Assume nodules cannot be used simultaneously in two different portals.)

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Meet The Creators

  • Educator Daniel Finkel
  • Director Igor Coric
  • Narrator Addison Anderson
  • Animator Nemanja Petrovic
  • Layout Artist Ivan Zupanc
  • Modeler Nemanja Petrovic
  • Camera Ivan Zupanc
  • Sound Designer Nemanja Petrovic
  • Content Producer Gerta Xhelo
  • Editorial Producer Alex Rosenthal
  • Associate Producer Bethany Cutmore-Scott
  • Fact-Checker Brian Gutierrez

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