I have been out of teaching for a couple of years and am hoping to return. I have an interview in an FE college and have to teach a 15 minute lesson on Introduction to persuasive writing. Would it be better to deconstruct an advertisement or short extract? My plan is to use AFOREST on a text and take verbal feedback as to the effectiveness of the techniques. 15 minutes is such a short space of time and I want to do well.