This document discusses how to effectively correct students' errors in English without discouraging learning. It recommends discriminating between when and how to correct based on the activity and its aims. There are different categories of errors like grammar, pronunciation, meaning, and appropriateness. Corrections can be done through self-correction, peer correction, or teacher correction using techniques like signing, gestures, or selectively correcting written work. Peer correction is beneficial as both students are focused on language learning with less dependence on the teacher.