The Ecology Amplify Core Knowledge Language Arts Grade 3 Unit 11 Activity Book CKLA is a workbook published by The Core Knowledge Foundation in 2015. This activity book focuses on language study, specifically in the subject area of ecology. It is part of the Amplify Core Knowledge Language Arts series, designed for Grade 3 students. The book is written in English and authored by Amplify Editors, providing a comprehensive and educational resource for students to learn about ecology through language arts activities.