students_begin_in_pairs_talking_about_a_specific_topic._once_every_student_has_had_a_chance_to_share_their_ideas_the_pair_joins_another_pair._this_continues_until_all_students_in_the_class_in_in_a_big_group.this_continues_until_the_class_as_a_whole_is_involved_in_a_group_discussion_about_the_topic