Despite preparing for over 20 hours, I managed to totally screw up my first full A level science lesson (double) which happened to be in front of the HoD. I lost the students, a couple asked me completely unexpected questions that I couldn't answer satisfactorily on the hoof and I waffled and waved my hands. (It was a subject which I learnt a completely different way when I was at school/uni. so was trying to get my head round teaching it according to the syllabus). I felt physically sick afterwards. Questions I had thought they would ask and had prepared answers for didn't come up. I've applied for a job at the school for my NQT year - do you think I've got any chance now? It was my second lesson on this placement - the one I taught before was only 30 minutes and got good feedback from the class teacher.