Select a student who has a good command of the language and ask him/her to sit at the front of the class. Give him/her a sheet of paper with a simple task to do (e.g. a calculation, copying a short paragraph from a textbook, etc.). Tell the class that their role is to impede the student from even starting the task by keeping on asking questions. The student selected should stop the activity to answer the questions. You can set a time limit for the student to complete the task, challenging him/her to finish it during the time established.
Another student can be called and challenged to do the task in less time while the class keep distracting him/her.Contributed by: Nilce Chaud