Leveled Reader 6pk Silver Double Lives: Rigby Sails Advanced Fluency Leveled Reader 6pk Silver Double Lives Sails Some animals have adapted to living both on land and in water. This selection presents examples of animals that lead these 'double lives,' including frogs, mosquitoes, sea turtles, crocodiles, platypuses, hippos, and even people. Grades: 4-5 Material Type: Student Materials, Resource Materials Format: Kit ISBN-13/EAN: 9780544082076 ISBN-10: 0544082079 Product Code: 1537375 National/State: National Copyright Year: 2013