Complete Collection for Parents


I've written or co-written eleven books, some of which have appeared in several languages. The majority are about the maths of everyday life, but I've also written books on cricket, memory and creative thinking.



I am Director of Maths Inspiration, a national programme of interactive lecture shows in theatres that has reached over 100,000 teenagers in the last ten years. I'm closely involved with the UK maths community, from primary schools to universities.


Talks & Radio

I give talks to adults, teenagers and children that range from small interactive workshops to keynote lectures in front of several hundred. I've also done lots of radio, including BBC Radio 4, 5Live, Radio 3 and 2, but not 1 or 6...yet.

Recent Blogs

The Button That Blows Out Candles
17 April 19

Here's the story of the old man who told me about the button that blows out candles. more...

How fast would a pole vaulter hit the ground?
10 April 19

A sporting Fermi question more...

How to find a cricket pitch in a football pitch
28 February 19

The official dimensions of every adult football pitch in the world arose from quaint numbers chosen by a group of Victorians and Edwardians. more...

16 February 19

Another bit of teacher jargon that is being imposed on children. more...

Giving Puzzles a Punchline
15 February 19

There is a craft to turning a mediocre puzzle into a memorable one more...

The upside down equation
28 December 18

How a curiosity was turned into a puzzle more...

The Magazine Keys of Ypres

The Magazine Keys of Ypres
11 November 18

Unlocking the mystery of some WW1 family memorabilia more...

Inching towards a metric world

Inching towards a metric world
18 September 18

Most of the English-speaking world adopted metric measurements decades ago. Yet imperial language lives on. more...

Recent Tweets

I see @wolframresearch has done a more accurate calculation of the #muellerreport redaction and reckons 7.3%. Sati… https://t.co/zbvot7knnt

about 5 hours ago

#CoreMaths question: Based on this image of the entire #MuellerReport, estimate the proportion of the report that… https://t.co/zavulLTyK7

about 7 hours ago

Here's a little calculator curiosity: The Button That Blows Out Candles https://t.co/RsAC76jPEk

1 day ago

#NationalSiblingsDay An unusual sibling birthday coincidence in my family: I have two older brothers. They share t… https://t.co/8sTHOPFm8u

8 days ago

A slightly Pythonesque Fermi question: If you removed the landing mat, at what speed would a pole vaulter hit th… https://t.co/qTg0jhGsSI

8 days ago

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