I first got the idea for this graphic organiser a few of years ago, but I don't remember where the inspiration came from or whether it was purely my own creation! It's a simple way of illustrating the connection between one mathematical fact and another. I use it frequently in my maths lessons to explore these relationships. I have developed three different formats to support students with their brainstorming. All three formats are available through my Teachers Pay Teachers store. A demonstration of how to use them is embedded below.