Photographs of an A grade GCSE Art & Design sketchbook put together in a Powerpoint presentation. Students find it useful as an exemplar and can be used to refer to specific pages at different moments in a project (e.g. mind mapping, planning, recording, evaluating...).
I chose this book as it is quite a clear example and not too long. It is not a perfect sketchbook, but shows an achievable standard and some interesting ideas.