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

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...

The Shooting Stars puzzle
19 October 18

Probability puzzles can be very slippery 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...

Alastair Cook and The Freaky Coincidence
7 September 18

As Alastair Cook retires from international cricket, here's a story of a freaky coincidence involving him, my sister and Radio 4's More or Less more...

How to present puzzles on the radio
5 September 18

If you want to present puzzles on the radio, it's not just the content that matters. Like a joke, it's also the way you tell it. more...

Arguing Climate Change
4 August 18

When there are arguments about global warming and climate change, there is often a frustrating vagueness about which part of it is being disputed more...

The Mystery of Phantom Puzzle No.137

The Mystery of Phantom Puzzle No.137
30 July 18

The story of a phantom puzzle that came from who knows where, and disappeared just as mysteriously. more...

The Lazy Student Formula
5 June 18

If you haven't got the time or inclination to revise all the topics on your course. more...

Tony Greig and Edvard Grieg

Tony Greig and Edvard Grieg
21 May 18

What's the connection between the former cricketer Tony Greig and the Norwegian composer Edvard Grieg? more...

The Alfred Hitchcock Lesson

The Alfred Hitchcock Lesson
16 March 18

When schools have a special themed day, it's often a bit worthy or dull. But here's the story of how a school added mystery and suspense to the classroom. more...

Recent Tweets

Ever need to know the time in Mumbai which is 5 1/2 hours ahead of GMT? "Turn your analogue watch upside down", ad… https://t.co/nue9gctSI6

about 8 hours ago

RT @lv3mathsldn_knt: They’re always great fun and there’s an event in London on the 8th July!!! Go and see @HelenPilcher1 @SparksMaths and…

1 day ago

I wonder if a cluster of cricket counties is going to break away and form an Independent Group... @legsidelizzy https://t.co/8FR2NRBo5z

2 days ago

...and the distance from the edge of the D to the goal line is also 22 yards (one cricket pitch length, also known… https://t.co/TUVdlCcoMD

2 days ago

So the width of a penalty area is exactly twice the length of a cricket pitch. Also, the width of a goal (8 yards)… https://t.co/YMZZXFZws1

2 days ago

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