A few years ago a teacher noticed one of her students, a shy young girl, was having trouble working out her arithmetic assignment.  The teacher went to the child quietly and asked if she could help with any questions knowing the girl was timid about asking for help.

When the problem was sorted out the little girl thanked the teacher.  The teacher told the little girl not to be shy about asking questions, "That's one of the reasons I am here."

The little girl thought about that for a moment and asked quietly, "What's the other reason?"