Maths teacher with a strong Italian/Spanish accent:
Teacher: What's the answer?
Student: I don't know.
Teacher: No, what's the answer?
Student: Just a sec, Miss.
Teacher: NO! No more secs!
*class falls out of their chairs laughing*
Geography teacher:
"I'm going to take you outside...
Honestly, I wouldn't greet the audience or thank them. I've been doing debating and public speaking for years, and that sort of stuff annoys the adjudicators, or any kind of marker. It sounds quite childish by senior school. You could acknowledge the audience by saying something like, "Members...
We did Authority and Leadership (I never want to hear those words again!) ... and hopefully we'll get our assessments back tomorrow. The text we did was King Lear.
We're doing:
Yankees and Confederates in the American states in the mid nineteenth century.
Bismarck and the unification of the German states.
The decline and fall of the Romanov dynasty.
The Meiji Restoration: nature and impact.