# Can you solve the time travel riddle?

- Institution: TED
- Department: TED-Ed
- Speaker: Daniel Finkel
- Year: 2018
- Level: For everyone
- Language: English
- Subjects: Mathematics
- Source: [TED](https://www.ted.com/talks/daniel_finkel_can_you_solve_the_time_travel_riddle)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

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. \[Directed by Artrake Studio, narrated by Addison Anderson\].

## Lectures

1. [Can you solve the time travel riddle?](https://invisiblenetwork.ai/learn/ted/daniel_finkel_can_you_solve_the_time_travel_riddle/511ae844ccb2), 4 min (TED's player)