View Spread Exploring the Grand Canyon Rosen REAL Readers RL Grades 3-4 IL Grades 3-4 Details: Product type: Paperback Book 6-Pack ISBN: 978-0-8239-8163-2 Author: Colleen Adams Copyright: 2001 Reading Level: Grades 3-4 Interest Level: Grades 3-4 Lexile: 800L Dimensions: 5 1/2" x 8 1/2" Paperback Book — $8.05 / $6.85 6-Pack — $48.30 / $41.10