I’m going to do a series of short posts on approaches or methods that teachers might not have seen before. I’m very aware that there will be many people who already use these approaches, but I figure that not everyone will have seen them so they are worth sharing. Today, vectors for enlargements. I first saw this on Twitter years ago but I can’t remember who tweeted it (apologies!). Later I saw my former colleague Lizzie Stokes (@misstokesmaths) using this…