video thumbnail 7:35
Calculator Number Trick: rectangle patterns

2019-05-31

[public] 262K views, 11.5K likes, 132 dislikes audio only

channel thumbStand-up Maths

Here is the original Fermat's Library tweet.

https://twitter.com/fermatslibrary/status/1052544515632959488

We make Think Maths teaching resources to go with Stand-up Maths videos. For this one we have a cheat sheet to an algebraic proof.

http://think-maths.co.uk/standupmaths-videos?yt-calculator-rectangles#calculator-rectangles

Many people are asking for the gif. It’s available in different forms in various places online.

https://tenor.com/view/matt-parker-parker-square-mindblown-maths-math-gif-11856384

https://imgur.com/gallery/HyPfz

Originally a homage to the Tim and Eric gif. From this video: /youtube/video/LhlqCJjbEa0

The ticking sound in the video was from here.

https://freesound.org/people/KentVideoProduction/sounds/159723/

CORRECTIONS

- I did not properly think through the hexadecimal example. I meant that any such digits on a base-10 calculator would give multiples of 11. On a true hexadecimal calculator you would get multiples of 17 (or any n+1 for base-n). First spotted by MasterHigure.

- Let me know if you spot anything else!

Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:

Igor Bogoslavskyi

James Williams

Magesh Jayapandian

David Lake

Chris W West

Support my channel and I can make more maths videos:

https://www.patreon.com/standupmaths

Music by Howard Carter

Filming and editing by Matt Parker

Design by Simon Wright

MATT PARKER: Stand-up Mathematician

Website: http://standupmaths.com/

Maths book: http://wwwh.umble-pi.com

Nerdy maths toys: http://mathsgear.co.uk/