In the United States, Chinese as a world language in the K-12 classroom is an emerging, fast-growing and ever-changing phenomenon. Students of Chinese language are a very diverse population with regard to age, grade levels, needs, language backgrounds and learning styles. Instructional conditions vary in terms of class size, contact hours, intensity of instruction and the availability of equipment and materials, etc. Professional development for teacher preparation and training is inadequate. This book is designed to facilitate teaching. It aims at reflecting and encouraging a break from traditional practice by combining language materials, teaching references, and instructional design into a single series for easy, quick and solid practical use. This book endeavors to face two essential questions for a teacher of K-12world language: What do I teach in a K-12 world language classroom? How do I teach in a K-12 world language classroom? Both the simplified and traditional Chinese Editions are available.