More from Chalkdust
Crocheting fractals
Ever thought about making your own fractal?
Mathscon: reshaping the world’s perception of mathematics
Introducing Mathscon, a mathematics conference with a difference!
Pretend numbers
20 questions, the axiom of choice and colouring sequences.
Curiouser and curiouser!
Some surprising mathematical facts
Dear Dirichlet Christmas special
Agony uncle Professor Dirichlet answers your personal problems this Christmastime.
Top Ten: Colours of chalk
The definitive chart of chalk's greatest colours