First Words with Peppa is a levelled reading series of Peppa Pig stories for children who are learning to read. The series is based on the Dolch Sight Words list; a list of the 220 most common words found in children's English-language reading material. Dens, a Level 4 Storybook, introduces the following Sight Words: best, call, don't, five, goes, green, its, made, many, pull and us. Peppa and her friends love playing in Peppa's treehouse. Then, Grandpa Pig makes a new den with a door that goes up and down. Which den will they play in now?