This document discusses teaching and learning media. It defines teaching media as means of conveying information from teachers to students, and learning media as everything around students that helps them learn, such as people, animals, things, and concepts. It notes that teaching media focuses on transmitting knowledge from teachers to students, while learning media concentrates on interaction and allowing students to create their own learning processes. The document provides examples of different types of media and discusses designing media to suit learning purposes, be easy to perceive, and have good proportions. It gives an example of a classroom activity using addition and subtraction to practice purchasing and selling.