This is the sort of thing I'd spend most of my maths classes trying to solve. You know, apart from the problems I was set. There's something so frustrating about getting (seemingly) simple instructions, and then completely fail at the task for the next twenty minutes. Here's the question. Stop me if you've heard it before. Take a piece of paper and draw a grid of nine circles on it, spaced out like the ones above. The question is, can you draw a a series of four, continuous, straight lines, that connect up all the circles? Have a go. We'll be here while you give it a try. Alright, done? Did you do it? Check out the video below and see if you got to the same conclusion. And then go on for the bonus level: Can you do it in three?? Source
