The teacher is the sender when she asks the students for their homework. The male students decoded the message and is ready to give his completed homework. The female student is panniking internaly because she didn't do it.
HEY! That's not a nice thing to do. Please appologize.
Thats rude, at least I'm trying.
Sorry, I won't laugh and disturb your conversation again.
It's fine, Thanks for saying sorry.
The female's student's feedback is she doesnt have her homework and the channel is face to face.
Thank you guys for solving your problems.
The teacher responds and says the female's grade is going to lower. The male student makes an external noise and laughs.
The male student decodes the message again and appologizes.
The female teacher encodes the conversation and is proud that the students solved their problem between themselves which is ethical responsibility.