Instead of immediately attempting to suppress the gum chewing in a child
almost totally a stranger, go across the room, and, after asking Susie’s
name, summon her to you, and very quietly ask her to put away her gum.
After doing that, request Susie to help you in keeping good order. The
chances are that a girl like her would be more or less bold and
dominating among her associates, so that if a feeling of goodwill toward
her teacher could be developed, it would be a valuable asset in
maintaining the order of the room subsequently.