"World English 4" Teacher's Book, a part of the *World English* series published by National Geographic Learning, is typically designed to assist teachers in guiding students through the various lessons, activities, and exercises in the *World English* 4 student textbook. The teacher's book provides not only lesson plans but also supplementary material, teaching tips, and strategies for managing a class. Here’s an overview of the types of content that might be found in a *Teacher's Book* for *World English 4*, though it may vary slightly depending on the edition: