Teacher vs Students!!!

Teacher: Class, if I bought 20 apples, and I gave 1/4 of it to my friend, how much will I have left?
Class: 15 apples.
Teacher: Good! Now, if I buy another 6 apples from the market, what will I get?
Arnold: Your change.

Mary-Beth: Teacher! Look what I drew!
Teacher: Oh! What is it?
Mary-Beth: I also don't know....

Home Economics Teacher: Richard, where is your homework?
Richard: Oh! I ate it.
Home Economics Teacher: Funny Richard, I'm laughing.
Richard: But you told us to make fried rice!

Teacher: Susan, where is your textbook?
Susan; I left it at home, teacher.
Teacher: What is it doing at home?
Susan: Um.... Nothing, after all it's not a living thing....

Teacher: Qing-Re! Stop talking!
Qing-Re: But teacher--
Teacher: Why is it that you can't keep your big mouth shut!?
Qing-Re: (Keeps quiet)
Teacher: Why aren't you answering me!?
Qing-Re's friend: But you told him to stop talking...

Wally: Teacher! Danny took my pen again!
Teacher: Danny! Why do you keep doing that!
Danny: I dunno. Coz it's fun?

Teacher: Okay class, tomorrow we'll be studying pi so remember to bring rulers and calculators!
Next day.......
Teacher: Class! Why did all of you bring a pie?
Susan: You said we will be studying pie so all of us brought one!
Arnold: I think I would like to be Pieologist!
Richard: Teacher, why does a Pieologist do?
Qing-Re: Teacher, after studying them, can we eat them?
Wally: Teacher! danny took my pie!
Danny: I didn't! The pie's box said "For You"