written based on Kurikulum 2013 (KI-KD 2018). The learning method in this book emphasizes in observing, question, experimenting, associating, and communicating. This book often requires team work, so the students will interact to each other and also actively seek knowledge from various credible sources. The sequence of four language skills (listening, speaking, reading and writing) are adapted to the learning material in each subchapters. Features of the book: Learning Focus, comprehensive list of learning targets. The Common Expressions in Learning Focus. Kick off, a flash preface of the lesson for each chapter. Pronunciation Center, information about linguistics matters. Brain Teasers, question aim to improve student's imaginative and creative skills. Interlude, interesting insights about topics being learned Essential Grammar, grammatical theories in each chapter. Precise Exercise, tests about language patterns and formulas. World Vault, collection of important words or expressions. Level Up! student's learning completion assessment form.