Maths on the back of an Envelope
What is a Googly?
Complete Collection for Parents
books

Books

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.

maths-and-puzzles

Maths

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-and-radio

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 numerous appearances on BBC Radio 4's More Or Less) and many podcasts.

Recent Blogs

The Two-Ewes-Day Problem
15 May 21

Six years after I set the challenge for somebody to give me a realistic scenario where the boy-girl 'paradox' arises, one has cropped up. more...


Dr John Haigh, RIP
10 March 21

John Haigh was an inspiration more...


Who Cares?
22 February 21

Some puzzles and problems are engaging, but others prompt the reaction 'Who Cares?'. What makes the difference? more...


Catch Up
16 January 21

Every so often a new game is invented that is simple and yet has hidden depths. Catch Up is a wonderful example. more...


Who should be vaccinated first?
1 January 21

How do you decide on who should be vaccinated first? It's an unenviable task. more...