Uploaded September 2019 | Updated September 2026, 2 weeks ago
Check out more fun mathematics problems at Jane Street's Real Numbers.
janestreet.com/real-numbers
If you want to have a guess for a river width of 10 (nine lily pads and the opposite bank) then put your guess with the word "guess" in the comments below. If anyone does work out the average guess: let me know!
If you have a solution: put that below as well. Be sure to like and comments which you think have cracked the problem.
Thanks to Ben Gillott for sharing the puzzle with Timandra.
My show "Humble Pi" had a sold-out run at the Fringe and will now be on tour around the UK. Dates and details: standupmaths.com/shows
Timandra has a few more dates for "Take a Risk" and also has a podcast by the same name: takeariskshow.com
Bec Hill is never performing "I'll Be Bec" again but is always doing a million other things: bechillcomedian.com
Rob West will be on tour with "Morgan and West: Unbelievable Science" as well as about a dozen magic shows: morganandwest.co.uk/live-dates
Git your code here! github.com/standupmaths/frog_problem
We have Think Maths "Frog Jumps" resources for maths teachers.
think-maths.co.uk/standupmaths-videos?yt-frog#frog
CORRECTIONS
- None yet, let me know if you spot anything!
- Oh, and this is not really a correction, more of an explanation, but you can see some dark stains on my hands in some shots of this video. That is because I helped Morgan and West load their science show out of the theatre at the end of the Fringe and my reward was to get silver nitrate on me.
Thanks as always for Jane Street being my principal sponsor.
janestreet.com
Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:
Bruce Patterson
Glenn Watson
Matthew Holden
Patrick Thiel
Adam Scatchard
William Marple
Support my channel and I can make more maths videos:
patreon.com/standupmaths
Filming by Matt Parker
Editing by Alex Glenn-Bash
Music by Howard Carter
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
Maths book: wwwh.umble-pi.com
Nerdy maths toys: mathsgear.co.uk
Check out more fun mathematics problems at Jane Street's Real Numbers.
janestreet.com/real-numbers
If you want to have a guess for a river width of 10 (nine lily pads and the opposite bank) then put your guess with the word "guess" in the comments below. If anyone does work out the average guess: let me know!
If you have a solution: put that below as well. Be sure to like and comments which you think have cracked the problem.
Thanks to Ben Gillott for sharing the puzzle with Timandra.
My show "Humble Pi" had a sold-out run at the Fringe and will now be on tour around the UK. Dates and details: standupmaths.com/shows
Timandra has a few more dates for "Take a Risk" and also has a podcast by the same name: takeariskshow.com
Bec Hill is never performing "I'll Be Bec" again but is always doing a million other things: bechillcomedian.com
Rob West will be on tour with "Morgan and West: Unbelievable Science" as well as about a dozen magic shows: morganandwest.co.uk/live-dates
Git your code here! github.com/standupmaths/frog_problem
We have Think Maths "Frog Jumps" resources for maths teachers.
think-maths.co.uk/standupmaths-videos?yt-frog#frog
CORRECTIONS
- None yet, let me know if you spot anything!
- Oh, and this is not really a correction, more of an explanation, but you can see some dark stains on my hands in some shots of this video. That is because I helped Morgan and West load their science show out of the theatre at the end of the Fringe and my reward was to get silver nitrate on me.
Thanks as always for Jane Street being my principal sponsor.
janestreet.com
Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:
Bruce Patterson
Glenn Watson
Matthew Holden
Patrick Thiel
Adam Scatchard
William Marple
Support my channel and I can make more maths videos:
patreon.com/standupmaths
Filming by Matt Parker
Editing by Alex Glenn-Bash
Music by Howard Carter
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
Maths book: wwwh.umble-pi.com
Nerdy maths toys: mathsgear.co.uk
![Recursive PowerPoint Presentations [Gone Fractal!]](https://i.ytimg.com/vi/b-Fa6HtvGtQ/mqdefault.jpg "Recursive PowerPoint Presentations [Gone Fractal!]
Thanks to Steve Mould for filming with me. Check out his How viruses self assemble video.
https://youtu.be/3X6qEE2fHvE
We have since made the t-shirt Im wearing available for purchase:
https://fotsn.teemill.com/collection/recursive-t-shirt/
We have some free teaching resources for anyone who wants to make a large collaborative fractal! As well as complicated 3D ones weve made a new Think Maths low-prep giant Sierpinski triangle guide.
http://think-maths.co.uk/standupmaths-videos?yt-PPT-fractals#PPT-fractals
The second channel video takes a closer look at the pptx file and the details of what version of PowerPoint you need to make this work.
https://youtu.be/5Mltw6cTb-s
Tom Wildenhain has since made far more successful PowerPoint fractals than Steve and I were anywhere near.
https://youtu.be/O8l_awjgoMI
If you want to see the live An Evening of Unnecessary Detail show: its once a month in London.
https://festivalofthespokennerd.com/show/an-evening-of-unnecessary-detail/
Some technical details about the Cantor Set.
http://mathworld.wolfram.com/CantorSet.html
CORRECTIONS
- Nothing yet. Let me know if you spot anything!
Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
Simon Hutchings
Philippe von Bergen
Richard Fourie
Alan Flett
James Tanner
Support my channel and I can make more maths videos:
https://www.patreon.com/standupmaths
Filming and editing by Trunkman Productions: http://trunkman.co.uk
Sound production by Peter Doggart
Music by Howard Carter
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/")
