#xA0; In Syncis an exciting, innovative, easy-to-use four-level course that reflects the lives and experiences of teenagers.#xA0; In Syncstimulates learning and broadens students'horizons through lessons that engage both intellectually and emotionally. The course includes the red filter,a unique learning tool that can be used to facilitate mastery of key grammar points. #xA0; Features Brings language learning to lifewith up-to-date topics and real-life teenage issues, problem-solving puzzles, and realistic communication activities Enables students to succeedthrough achievable and motivating lessons, extra practice in the Student Book, and mixed-ability exercises in the Language Builder