good 'n' bad jokes

Found those on a webternet site.
Ah, I miss my school in Germany.

TEACHER: Maria, go to the map and find North America.
MARIA: Here it is.
TEACHER: Correct. Now class, who discovered America?
CLASS: Maria.
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TEACHER: Glenn, how do you spell 'crocodile?'
GLENN: K-R-O-K-O-D-I-A-L'
TEACHER: No, that's wrong
GLENN: Maybe it is wrong, but you asked me how I spell it.
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TEACHER: Winnie, name one important thing we have today that we didn't have fifteen years ago.
WINNIE: Me!
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TEACHER: Millie, give me a sentence starting with 'I.'
MILLIE: I is..
TEACHER: No, Millie..... Always say, 'I am.'
MILLIE: All right... 'I am the ninth letter of the alphabet.'
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TEACHER: George Washington not only chopped down his father's cherry tree, but also admitted it. Now, Louie, do you know why his father didn't punish him?

LOUIS: Because George still had the axe in his hand.
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TEACHER: Now, Simon, tell me frankly, do you say prayers before eating?
SIMON: No sir, I don't have to, my Mom is a good cook.
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TEACHER: Clyde, your composition on 'My Dog' is exactly the same as your brother's. Did you copy his?
CLYDE: No, sir. It's the same dog.
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TEACHER: Harold, what do you call a person who keeps on talking when people are no longer interested?
HAROLD: A teacher