School today

So if any other Jet's read this, I have a question for you. Who else has a teacher that expects you to teach the entire class? I arrived at one of my middle schools today, and it's the first time that I am not doing Self-intro lessons here. I go with one of the teachers and she does what I would expect, explain things some and then we have a conversation or shes uses me for pronunciation. First we reviewed the material from last time (what is this, what is that etc), then we did "whats your favorite______) and played a bingo type game. I felt it was quite a mutual class and was satisfied.

Then I went to the next class with another english teacher. Now, her english isnt very good, she is quiet, and I dont see how she is qualified to be an English teacher but she can get by. However, we were leaving the staffroom to go to the class and I was only carrying a ball i use to throw to the students and some stickers and she asks "is that all you need?" It was at this point that I got suspicious but we continued on. So we get to the classroom and she just walks off to the side and leaves me in front of the kids. I was more than a bit surprised but I managed to think on the fly and basically just led the class through what we did in the class before. However, without the teacher helping, I wasnt quite sure if i was doing it right and I had to even control the class. I didn't want to use my Japanese in the class at all b/c the kids currently think i know ohayo and thats it. But god, I was angry. I guess I have to plan every lesson in advance to teach it by myself. A Trial by fire.