More from Chalkdust
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Ashleigh Wilcox, Jenny Power and Rachel Evans show you how to draw pretty pictures
On the cover: flexahedron
Connie Bambridge-Sutton invites you to make a flexible 3D shape
A walk on the random side
Tanmay Kulkarni intentionally gets lost on the Tokyo subway
When Truchet met Chladni
Stephen Muirhead meets neither, as he explores waves, tiles and percolation theory
Puzzles about calculus
Can you solve these puzzles about differentiation and integration?
Victorian maths tricks with old money
Exploring mental arithmetic tricks in T. Martin's 1842 guide, 'Pounds, shillings and pence'