Vocabulary is central to English language teaching. Without sufficient vocabulary, students cannot understand others or express their own ideas. Teachers who find the task of teaching English vocabulary a little daunting are not alone! This book presents important issues from recent vocabulary research and theory so that teachers may approach teaching vocabulary in a principled, thoughtful way. Topics covered are understanding vocabulary, importance of vocabulary, relevant research findings, students' vocabulary levels, and teaching vocabulary effectively. This easy-to-follow guide is practical for teachers in any context and provides helpful reflections that offer ideas for your own vocabulary teaching.