Episode | Gallery | Transcript |
![]() |
End of my tether, don't say that word! Areas of this article contain spoilers about Double Back. Please proceed with caution. Read at your own risk. |
Double Back is the second special episode of Learningblocks. This is the 122nd Numberblocks episode overall.
Synopsis
It's time for a time travel adventure! Sixty-Four's new time machine keeps sending the Numberblocks back in time. Can they double up in time to fix it?
Characters
- Two (smallest number)
- Three
- Four
- Eight
- Nine
- Ten
- Thirteen
- Fourteen
- Sixteen
- Twenty-Five
- Thirty-Two
- Sixty-Four
Trivia
- This episode's description used to show that it's a crossover with Alphablocks, but it was later removed.
- This tweet from the Numberblocks Twitter gave the impression at the time that this was a mistake, and that there wasn't going to be any crossover special, at least not in the near future. However, crossover specials between Alphablocks and Numberblocks have come out since then.
- This episode was put on iPlayer on Friday, two days before it aired on TV.
- This episode's logo is a parody of the movie "Back to the Future".
- Sixty-Four's time machine is a parody of the DeLorean car.
- This episode has a time-travel plot, where a certain character travels back in time to change an event in the past.
- The type of time-travel featured in the episode is a "time loop", where the main character gets sent back 2 minutes in the past, in an altered timeline, with the only difference being that the main Numberblock is twice their size. This repeats until Sixty-Four is the one heading to Sixty-Four's time machine, to plug the time regulator.
- There are a total of six different timelines in the episode.
- This is the third episode to teach about doubling and halving. First being Double Trouble and second being Snow Day Doubles.
- This episode marks the debut of the square root sign and the decimal point.
- Sixty-Four is the biggest Numberblock in this episode, and is the biggest Numberblock to appear in any of the specials.
- The episode uses dynamic physics in some parts such as when Ten and Three fall into the ball pit and some of the balls roll out.
- Despite being a special, people still refer to it as the 122nd episode of Numberblocks.
- The shoe shop from Two Times Shoe Shop, and Octonaughty's lair from Now in 3D have cameo appearances in this episode.
- In this episode, Three still has the rubber duck from The Lair of Shares.