More from Chalkdust
On the cover: flexahedron
Connie Bambridge-Sutton invites you to make a flexible 3D shape
Crocheting fractals
Ever thought about making your own fractal?
An invitation to category theory
Just what is category theory? Tai-Danae Bradley explains
Chalkdust Issue 05 coming 7 March
Free launch party, 7.15pm. Come along! Free copies of Chalkdust, free pizza, and buy your own Chalkdust T-shirt.
Roots: Pythagoras of Samos
Pythagoras gave us so much more than a² + b² = c²
Ace
How tennis players spin and slice their serves