Hiya I had the same interview last year although I didn't get a place on the course. Firstly for the written task, it's basically just an essay-type question off the cuff about what you understand about the Rose Review. However I wouldn't worry too much about content, I think the main focus they are looking at is your English skills. In terms of the presentation, I worked with Reception so I just did a talk about the use of play for learning, but I think the more interactive you go, the better. One guy in my interview brought in an example of a resource he had made and talked to us about that which I thought was really effective. You've mentioned using puppets etc, this is a really good idea too and something I wish I'd thought of when I did mine! Overall it is a really tough intense day and you'll probably leave feeling really deflated (I did!) but the staff are really friendly and put you at ease and I found all of the other interviewees really friendly too. Good luck, just relax and be yourself!