"Interactions Mosaic, 4th Edition" is the newly expanded five-level, four-skill comprehensive ESL/ELT series for academic students. The new edition, for beginners to advanced learners, incorporates interactive and communicative activities while still focusing on skill building to prepare students for academic content. Reading, Writing, Listening and Speaking, as well as Grammar are thoroughly presented in each strand. High-interest themes are integrated across all skill strands and levels. Language proficiencies as well are articulated from level to level. The Instructor's Manual, one for each student book, provides new expanded activities, user-friendly instructions, Placements Tests, Chapter Quizzes, and corresponding Answer Keys.