“Units of Study in Opinion, Information, and Narrative Writing, Grade 4” is a trade paperback textbook pack by Lucy Calkins, published by Heinemann in 2015. This textbook pack, designed for elementary school students, focuses on improving writing skills in the areas of opinion, information, and narrative writing. With a beginner level of difficulty, it provides structured units for students to develop their writing abilities in English language. The books measure 8.7 inches in length and 11 inches in width, making them a valuable resource for educators looking to enhance their students’ writing skills. May be some highlighted text and/or writing from previous user.