I'm a TA and several times a day I have to take my 1:1 out of the room for interventions. The time I need to take him out is usually in the middle of a lesson so I feel like I need to ask my teacher if it's ok to take him out (in case she wants him to finish what the class are doing first). But whenever I ask my teacher, she seems offish with me - making comments like "I can't be expected to remember what your timetable is" or "I can't talk to you now, I'm in the middle of teaching..."! But it just seems rude to walk out of the class! I asked what she'd prefer me to do and she said "give me a qjuick signal and I'll let you know if it's a good time or not" - but I can never make eye contact! There is very much an atmosphere of "I'm busy, don't interrupt me" and I feel like I'm walking on eggshells.
What do you guys do? TAs, do you just leave the class without checking with the teacher? And teachers, do you like your TAs to ask you?