i have a few pgce-related questions. i have an interview for a place this week which involves a morning at a school in the classroom, then a 3 minute presentation on any object i like, then a proper interview. i have done work in schools, though i have never actually 'taught' as such, just assisted. how should i go about the presentation exactly? could i just make it about say, tapes, or records? (it does say any artefact after all, though how i would relate that to the national curriculum im not sure, pyramids might be better). also, how much am i meant to know in terms of education for the interview?