Grammar Dimensions 1 Workbook (ISBN: 0838402666) is a supplementary workbook designed to accompany Grammar Dimensions 1: Form, Meaning, and Use. It provides additional practice to reinforce the grammar presented in the Student's Book through a variety of controlled and communicative exercises. Learners develop accuracy in grammar while improving editing, sentence construction, and written communication skills. The workbook is suitable for beginner to lower-intermediate English learners (approximately CEFR A1–A2) and can be used for classroom practice, homework, or self-study alongside the main course.