Classroom language

"How are we all today?"/ "How are you (today)?" / "How are things?"

• "How are we all today?"/ "How are you (today)?" / "How are things?"
• "Are you (all) feeling better today?“
• Good morning, guys! 
• Hello everybody!
• I hope you have all had a nice weekend.
• I'm a teacher trainee and my name is…

• "My name is Mr/Mrs/Ms .. / I'm your English teacher this year/ this term/ today. "Can you all introduce yourselves to me?"
• "Let's introduce ourselves, shall we?"
• "This is my name at the top of the board, it's pronounced..."

Hello again. Mr/ Mrs is still sick/ Yes, (it's) me again!

• Hello again. Mr/ Mrs is still sick/ Yes, (it's) me again!
• Hello, everybody. My name is ... I am substituting for...
• I’ll be substituting for your English teacher today.
• "I'm covering for your usual teacher (today/ this week). He/ she has a cold"

I've come to take ...'s place. Or: I'm standing in for...

• I've come to take ...'s place. Or: I'm standing in for...
• I’ll be taking you for the rest of the week.
• Who can tell me what you did at the last lesson?
• Where did you stop at the end Of the last lesson?
• Where are you in your text books?
• What's your homework?