The document discusses language use in teaching and techniques for classroom interaction from a socio-cultural perspective. It describes how teachers use language to organize activities, control behavior, teach curriculum, and assess students. A common interaction pattern of initiation-response-feedback is examined, where the teacher elicits and evaluates student responses. Specific techniques for teaching include eliciting knowledge, responding to students, and describing shared experiences. Effective classroom interaction is viewed as a dialogical process that builds understanding through relationships and culture.