This book explains everything about volcanoes, from the life of a volcano, to plate tectonics, to lava formations, to nearby civilizations. Fact boxes and diagrams showcase amazing details, while a glossary, index, and discussion questions aid in reading comprehension. Grade: 4 Subject: Earth Science Genre: Informational Text Comprehension Skill/Strategy: Comprehend/Take Notes Diagnostic Reading Assessment (DRA/EDL): 40 Guided Reading Level: R Lexile Level: 800L DK's iOpeners equip K-6 students with the skills and strategies they need to access and comprehend nonfiction so that they are not only learning to read but reading to learn. The combination of high-interest content and eye-popping photography of iOpeners brings science and social studies topics to life, raises student achievement in reading, and boosts standardized test scores.