Which approach is least effective in providing student feedback?

Vague comments with no direction are the least effective approach to providing student feedback because they do not offer the necessary guidance or clarity that students require to understand their performance and areas for improvement. Effective feedback should be specific, actionable, and constructive, allowing students to know exactly what they need to enhance and how to achieve it. Clear and constructive critiques, encouragement of student questions, and specific suggestions for improvement all serve to promote understanding and growth, helping learners to engage with the material and their performance in a meaningful way. Without clear direction, students may remain confused about their shortcomings and lack the motivation to improve or rectify their mistakes.