Imaging maths - Inside the Klein bottle

September 2003

Möbius Band

The Möbius band is one-sided

Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

How long a line can a pencil draw?

A quick example of the art of rough and ready calculations.
Testing testing in schools

What's the safest way to reopen schools? And can testing make things better?
Keeping up with COVID-19

Trying to work out the real time incidence of a disease in the middle of pandemic has never been done before, but the team behind the ONS COVID-19 Infection Survey have developed a way to do just that.
Welcome to the world of symmetry

Explore the mathematical study of symmetry with this collection of content, which includes short introductions, in-depth articles, a podcast, and some magic!
The hardest logic puzzle ever

Try your brain at this tricky, but lovely, riddle.