This text is a guide for high school teachers, college faculty, and graduate teaching assistants involved in introductory physics teaching. Teaching Physics is a combination of the previous Guide to Introductory Physics Teaching, and Homework and Test Questions for Introductory Physics Teaching. Both works have been edited to incorporate suggestions and feedback received after the first publication. Added to this combination is a monograph intended to illustrate how certain misleading aspects, widely prevalent in existing text presentations, can be rectified in introductory teaching of the energy concepts. This is intended as a guide and resource for active teachers at college and high school level. Introductory physics presents a challenge to students and teachers alike. Arons has spent years studying how students understand physical concepts, models, and lines of reasoning. In this guide, he presents observations from throughout the physics teaching community that have a direct bearing on classroom practice at the most basic levels of the subject matter. Divided into three parts, the first deals with basic teaching techniques, the second with developing homework and tests, and the third introduces classical conservation laws. It gives instructors everything they need to make physics accessible. Arnold B. Arons is the author of Teaching Introductory Physics, published by Wiley.