The document provides 20 tips for teachers to effectively give feedback to students. It begins with an introduction explaining the importance of feedback and defining what constitutes feedback. The bulk of the document is dedicated to listing the 20 tips, such as ensuring feedback is timely, focused on specific skills or knowledge, and encourages further improvement. It also recommends asking students for self-reflection and peer feedback. The document concludes by emphasizing feedback should create a positive learning experience for students.