Take a good look at the patterns and figure out which shape comes next for the square. Some people on Instagram thought this puzzle was simple, while others thought it was hard.

Discover how to create repeated patterns using 2D shapes in this fun BBC Bitesize reception guide.

Carnegie Mellon researchers have created a method that generates knitting patterns for arbitrary 3D shapes, opening the possibility of “on-demand knitting.” Think 3D printing, but softer.