The snow has finally arrived! Outside it’s coming down thick and fast and I’m watching it from the cosiness of my front room, feeling very thankful that today is my day off. In teaching there are many things that can lead your carefully planned lesson astray; last night’s Facebook kick-off, a puppy love quarrel (and the subsequent tears that come with it), someone accidentally calling you Mum. But nothing compares to the complete derailment that is snow! Forget trying to teach them anything, your lesson is literally out of the window! It starts as soon as the first few flakes…