Thanks very much for another superb, enjoyable day. I liked the idea about not over complicating things and trying to look at Physics through the eyes of a 15 year old – that’s exactly how I hope I work. I thought the experiment, banging the tripod on a desk with string was brilliant – I’ve never seen it before in 29 years of teaching Physics. I hope to visit the Physics Factory again soon and will certainly be sharing ideas with my colleague and spreading the word to others. Ian Keir (Bridgnorth Endowed School, Shropshire)