The document discusses techniques for providing feedback and correcting errors in language learning. It identifies three types of corrections: self-correction where students correct themselves; student-to-student correction where students correct each other; and teacher correction. For self-correction, teachers can use techniques like repetition, echoing, questions or hints to subtly point out mistakes without telling students they are wrong. Student-to-student correction works well in cooperative classrooms but the original student must still be involved. Teacher correction is a last resort if students can't self-correct or correct each other. The document also addresses the difference between accuracy and fluency activities when deciding whether and how to correct errors.