More from Chalkdust
A canal runs through it
Colin Beveridge barges in and admires some curious railway bridges
In conversation with Dominique Sleet
Ellen Jolley learns how to run a maths outreach programme
Puzzles about partitions
Tricks and puzzles that provide an introduction to the world of partitions
Top Ten: Units of measurement
The definitive chart of the best units
Biography of Sophie Bryant
A biography of Sophie Bryant
Politics: a tweeting glance
What does Twitter have to do with politics?