Bells can do a lot more than just jingle! In fact, being a decent bell ringer requires razor-sharp mathematical precision and a vast memory. And just 16 bells are enough to provide your neighbours with over a million years of non-repeating bellish amusement.

Today the Nobel Prize award ceremonies will be held in Sweden! And while there may not be a Nobel Prize for maths, most of the science laureates' achievements would be impossible without it. Find out why with our stories on some of this and past years' Nobel Prizes.

Is there anybody out there? Find out behind door #9...

How does Santa manage to squeeze through chimneys? How do reindeers manage to fly? When will I get the Christmas shopping done? These things are mysteries, so in keeping with the mood, Door 8 opens on some of our favourite mysteries from the world of maths.

The end of the year (as well as a Plus birthday) put us in the mood to reflect on mathematical milestones. Celebrate with us behind door number 3...

When you saw us outside building snow-mathematicians and throwing snowballs we weren't just larking about, honestly! We were actually conducting in-depth research into symmetry and trajectories — and here our results, behind door number 2...

Inspired by the Science in School Advent Calendar, here is the 1st door to open.... I wonder what is inside?