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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Pi with Pies (director's slice)

Pi with Pies (director's slice)

A 6'28" version of our "Pi with Pies" calculation.

Videos features Matt Parker who tweets at https://twitter.com/standupmaths

The Pi-inspired music in the video explained: http://periodicvideos.blogspot.co.uk/2013/03/pimusic.html

Our full collection of Pi videos at http://bit.ly/W4oDN1

While the pies are usually delicious, this batch was not for consumption (even by hungry students, for those who suggested it!) but we feel they were used in a fun way to make people think about mathematics - perhaps some people who would not otherwise take an interest...To mark Pi Day we instead donated £314 to a local charity which helps feed people in crisis.

If you'd like to make a donation, here are some suggestions:

Matt is a supporter of Depaul UK, helping young homless people. You can donate through their website: http://www.depauluk.org/

Numberphile's donation was to a local group which does not have online donation facilities. However here are some other options...
http://www.wfp.org/
http://www.foodcycle.org.uk/
http://www.napsoc.org/

Contact us with any others you'd like on the list!

Numberphile also raises money for cancer research if you'd prefer - donate here: http://www.justgiving.com/numberphile-charity

Special thanks to Pukka Pies (for the pies), Notts Country FC (for hosting us) and the football channel Copa90 (for helping us out) - http://www.youtube.com/user/Copa90football - plus James Hennessy for being second camera!

Problems with French Numbers

Problems with French Numbers

How Pi was nearly changed to 3.2

How Pi was nearly changed to 3.2