EFFECTIVE FEEDBACK

 "Feedback is the information communicated to a student in regard to their understanding of shared learning objectives of a given task against an agreed set of criteria. This information will include guidance on how to improve. Feedback is the information that is relayed to the student about their progress and can be based upon a variety of forms of evidence including: marked work, un-graded teacher checked worked, oral contribution, practical displays, draft work and re-drafted work; this information can be relayed to the student in a written comment or in a face to face discussion."
Giving feedback can turn into a problem when teachers do not know how to give it to students; furthermore, giving feedback requires students to have specific goals and teachers to give concrete and useful comments thus, "nice presentation" and " you made a mistake" are not good examples of feedback. Students will wonder what they exactly did good or wrong if teachers do not give specific information on what they did. 
Moreover, when giving feedback, it is also important to give good comments to students if something went wrong during the activity they develop because there will always be some things that students did well, so teachers should be careful and have a well structurated guideline to identify students weaknesses and strengths.
Effective feedback will in fact, give students the opportunity to improve and achieve their goals.





http://www.opencolleges.edu.au/informed/features/giving-student-feedback/