How to remember (almost) everything ever
How many socks make a pair?
Maths for Mums and Dads


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 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

Robshaw's Risky Decision
27 September 15

England's rugby captain was criticised for a gambling for a win and losing. Here's the maths. more...

The puzzle of the two Black Queens
4 September 15

A puzzle with an answer many people will find counterintuitive. more...

Robin the Frog Wasn't Halfway Down
24 August 15

Robin the Frog sang about how he always liked to be halfway down the stairs. But he lied. He wasn't halfway. more...

Umpire's Call
16 July 15

Across the world, statisticians search for a way to improve on cricket's controversial Duckworth Lewis method. Maybe they are looking at it the wrong way. more...

Hannah's Sweets
6 June 15

The maths GCSE question about Hannah's Sweets was tricky, but the level of media coverage was out of all proportion. more...

Ben Stokes, Joe Root and Square Roots.
1 June 15

Ben Stokes is being tipped as England's next great all-rounder. But how do you measure all-round performance? more...

Heathrow Airport and the Travelator Problem
11 May 15

A real life puzzle with an answer that isn't obvious. more...

Cheryl and the Perfect Logicians
13 April 15

The Cheryl birthday puzzle that recently went viral has opened a can of worms. more...

The Curious Popularity of Mackerel Questions
6 April 15

A trivia question that led to the pastime of Tubewhacking more...

The Maths of Red Noses
6 March 15

There are nine noses to collect for the full Comic Relief set. But how many do you have to buy before you've got the lot? more...

How the World Cricket Rankings were born
31 January 15

With cricket's World Cup about to start, here's my previously untold story behind how the world player rankings began. more...

Homework Should be for Parents, Not Kids
6 January 15

Most maths homework for primary children is a tedious chore. Schools should set homework that parents enjoy. more...

How Donald Duck created an Urban Myth
19 December 14

From architecture to credit cards, myths about the beauty of the golden rectangle are hard to dispel. It's Donald Duck's fault. more...

What can the Chinese learn from us?
1 December 14

English schools are discovering some highly effective teaching methods from the Chinese. But what can the Chinese learn from us? more...

Making things Complicated: Jardin's Principle
2 October 14

A universal syndrome that is often observed but doesn't have a name. Well it does - but hardly anyone knows it. more...

Fronted Adverbials and other Pointless Jargon
10 May 14

This morning I discovered some new jargon. And I'm annoyed. more...

How to Teach Maths
4 February 14

If exams didn't exist how would I teach maths? And what maths would I teach? more...

Recent Tweets

(2/2) ...not sure I had a good answer to that Hyperspace question, but I did wonder if it might make snooker a lot more interesting.

about 9 hours ago

Some great questions after my maths/sport talk at @dulwichcollege today including: Which sport would you most like to play in Hyperspace?

about 9 hours ago

Oops, I meant of course that tomorrow England start a series AGAINST Pakistan IN the UAE. Dubai or not Dubai, that is the question.

1 day ago

Tomorrow as England's cricketers start a Test series in Pakistan, I'll be at @dulwichcollege talking about sport, decision-making and maths.

1 day ago

Based on this my tip for maximising chance in The Apprentice would be: Avoid being a team leader for first 3 shows.

1 day ago

Follow Rob on Twitter