One of my favourite days that I run in schools is Stone Age. It does pose a number of questions such as how do I fit 2.4 years of history, remembering that humanity does predate the Stone Age. To make this understandable to children I do have to cut out a lot and focus on some very interesting but I feel unrepresentative chunks of human history.
When we come to the Stone Age we can divided prehistory into five time periods, these enable the children to have some framework in which they could develop their knowledge. So we have the Paelolithic, the Mesolithic, the Neolithic and the Bronze and Iron Ages. 95% of human history is in the Paelolithic and its to this age that essentials like string, clothes, storytelling, team work and picky eating were invented. If I could live anywhere in human history I would live in the tactless wastes of time that we call the Old Stone Age.