Help to prepare an hour session for under 13 boys hockey?

I have an interview for a new job and have been asked to prepare an hour session for the under 13 boys hockey team. There will between 11-22 boys and will be on grass. I am new to hockey coaching and looking for advice. Can anyone receommend a good all-round training programme to include warm up, skills and games? Any help would be very much appreciated!!

hai..mr richard..under 13 means concentrate on basic skills like, grip, hitting, stopping pushing, dribbling,etc. warmup & fitness can be almost identical to other outdoor games ok! but my real advice is , just for the sake of a job, dont pretend/try to be a hockey coach