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

16% of 25? Easy!
21 May 19

A regulation percentage calculation went viral recently. Last week a teenager called me a genius for being able to work this out in my head. more...

Test Match tickets for children should be FREE
13 May 19

A day at the Test match can be a wonderful experience for children. What a shame that cricket has almost given up trying to bring them in. 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

It's an odd feeling waiting to hear what my Year 11 daughter made of #EdexcelMaths this morning. No reports of a Ha… https://t.co/LadcoYTxE5

about 17 hours ago

Ooh I like this idea. But the ECB should send households the NEW edition (out in two weeks), which even includes… https://t.co/qkwGxAZv5A

1 day ago

First look at the cover of my new book 'Maths on the back of an envelope', coming out this autumn. #coremaths. https://t.co/dVgn0PSruu

1 day ago

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

3 days ago

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

4 days ago

Follow Rob on Twitter