One day at school Kristie addressed a question to her teacher: "Ms R., my parents think that computer games are not good for us kids. We would get nervous and not get enough exercise. However, I have read that some games help to concentrate better and work together on a problem."
Afterwards Kristie and her classmates freely expressed their thoughts to one another, elaborated one another’s ideas, argued for and against particular computer games, and joked with one another as they constructed arguments.