This book explores the development of morphological awareness and mastery in English as a second or foreign language, with a particular focus on inflectional and derivational morphemes. Through linguistic inquiry, empirical research, and classroom practice, it examines how learners understand word structures, apply grammatical rules, and overcome common errors in English speaking and writing. Special attention is given to Indonesian junior secondary school learners and the challenges they encounter in using English morphology accurately.

Designed for students of English Language Education, English teachers, and researchers in applied linguistics, this book presents linguistic foundations, theoretical perspectives, research findings, and practical approaches to morphology instruction. It discusses the nature of morphemes, the distinction between inflection and derivation, word-formation processes, Indonesian affixation, morphological development, and common learner errors. Each chapter combines conceptual explanations with authentic learner data, practical activities, and reflection questions to connect linguistic theory with real classroom contexts.

This expanded edition offers additional theoretical insights, empirical analysis, and instructional resources to support effective morphology teaching. It covers assessment techniques, corrective feedback, input enhancement, reading and speaking strategies, classroom games, model texts, and writing instruction. A dedicated resource chapter provides word matrices, worksheets, lesson plans, Mobile-Assisted Language Learning (MALL) task cards, and research templates that educators can adapt to their teaching needs. These materials are designed to help teachers integrate morphological knowledge into meaningful language-learning activities.

The central message of this book is that morphological competence involves both awareness and mastery. Learners must not only recognize and analyze word structures but also apply their knowledge accurately and appropriately in communication. By integrating linguistic theory, research evidence, and pedagogical practice, this book aims to strengthen understanding of English morphology and support the development of more effective language instruction, particularly in writing and speaking.