What is a Googly?
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

Test Match tickets for children should be FREE
13 May 19

A day at the Test match can be a wonderful experience for a child. What a shame that cricket has almost given up trying. more...

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

e^π - π "equals" 20? Rapidly checks on calculator. Never come across this before. https://t.co/h8Or5SGmoJ

1 day ago

Last #NumeracyTip of the week: despite education being metric for 50 years, most of the UK population (including I… https://t.co/PVH0arhvib

2 days ago

Today's #NumeracyTip: knowing how to double/halve and multiply/divide by 10 can take you a long way. Eg what's 1234… https://t.co/a4v957n06C

3 days ago

Today's #NumeracyTip: What's 16% of 25? Hard to work out mentally. But it's the same as 25% of 16 (easy, a quarter… https://t.co/meFVR6oone

4 days ago

Live in South London? Know nothing about cricket? Event to mark the new edition of What is a googly? at @rye_books… https://t.co/wqgZkzo0jC

5 days ago

Follow Rob on Twitter