Plus magazine

Plus is an online popular mathematics magazine:

which aims to introduce readers to the beauty and the practical applications of mathematics. A lot of people don’t have a very clear idea what “real” maths consists of, and often they don’t realise how many things they take for granted only work because of a generous helping of it. Apparently, some people even have the idea that it’s boring! Weird.

Plus has articles, videos, puzzles and other maths-related content.