“Some collaborative work is fine for introverts, even beneficial. But it should take place in small groups—pairs or threesomes—and be carefully structured so that each child knows her role. Roger Johnson, co-director of the Cooperative Learning Center at the University of Minnesota, says that shy or introverted kids benefit especially from well-managed small-group work because “they are usually very comfortable talking with one or two of their classmates to answer a question or complete a task, but would never think of raising their hand and addressing the whole class. It is very important that these students get a chance to translate their thoughts into language”