These websites provide useful guidance about how to provide feedback to students. In most cases, these also apply to fellow professionals. In what cases would the different elements of the advice apply? In which cases would they not? How might these be handled differently when working with children versus working with teenagers, or will professional colleagues?
"Teacher Tips" site
http://www.uab.edu/uasomume/cdm/feedback.htm
Specific to ESL
http://www.esl-school.com/archives/2007/07/giving_students_feedback.php
Powerpoint from class