teaching large efl class

[amatoolah]

Hi .please i have a question concerning teaching large classes, can someone tell me what the problems of teaching large number of students, its aspects, and how can we as teachers solve this problem & provide an optimal learning to students. Thank you so much

[Tdol]

Firstly, how large do you mean? Where I teach, 20 would be a huge class, but in many parts of the world, it could be a few times that.