This document discusses the role of mass media in teacher education and development. It begins by noting that prospective teachers enroll in training courses to help shape their views and receptivity to new knowledge about mathematics. Their prior experiences influence how they see mathematics and how they will teach. The document then provides an overview of different mass media sources like newspapers, magazines, television, radio, and their advantages and disadvantages for sharing information. It explains how print media like newspapers have historically supported agricultural extension by publishing news, recommendations, and research findings. Overall, the document emphasizes that mass media can positively influence teacher development when used appropriately to disseminate relevant information.