More from Chalkdust
- David Sheard sets the third puzzle. Can you solve it?
- David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
- We chat to the chief scientific advisor to the Home Office about the role of scientists and mathematicians in politics
- Make your own treasures, guaranteed to be priceless on a future episode of Antiques Roadshow
- Because we love functions!