doh! the king of France

I made a stupid error in class today. I was so tired and and ready to teach the particular topic of the day thatI got completely flummoxed by a question about a topic from two weeks ago. I am going to have to bite the bullet and go back onMonday and make amends, make myself look stupid... oh well quite used to that. why can't I get them to write down all their questions on a piece of paper for me to think about and answer. I could tell them it was like setting me an exam. they should go for that.