NEXOS, Fourth Edition, offers a media-rich, personalized language learning experience and total flexibility for teaching different types of learners -- including true beginners and heritage speakers -- in a variety of course settings. Completely integrated, up-to-date print and digital components give instructors the freedom to differentiate instruction while adjusting to individual learning preferences and providing strategies to develop 21st century skills. Task-based activities, backward design structure, and KWL charts further promote the development of critical thinking. Cultural themes and activities encourage students to engage in meaningful communication through multi-modal connections and the four-tiered storyline video program that contextualizes grammar and vocabulary.