So the lesson story is crucial to accessiblity. It lives in the planning of coherent and connected activities, as we've said ; it can also live in teacher language. I don't mean that you should be using the phrase "lesson story" with pupils. A plot is a series of conected events; the lesson becomes a story when the connections are clear.There;s no reason why you shouldn't be explicit about the story from start to finish. You sketch out the whole story at the begining.