Strip of LEDs in a slow shutter
More from Chalkdust
Christmas puzzle #2: A Christmas nonogram
Puzzle #2 in our 2020 Christmas puzzle series
How to cheat at cards
Kevin Houston teaches us how to deal ourselves the best hand
Review: Power in numbers — the rebel women of mathematics
Celebrate International Women's day by reading about rebel women in mathematics!
How to make: a Möbius Surprise
Surprise yourself by making this thing
Issue 06
Cardioids in coffee cups, counting with three fingers, and breakfast at Villani's. Plus the return of all your favourite fun pages in our autumn 2017 issue.
Cat among the pigeons
Some interesting observations with the pigeonhole principle