When a big new yellow tractor arrives, Otis the friendly little tractor is cast away behind the barn, but when trouble occurs Otis is the only one who can help. Goldfinch 2012-2013 Interest Level: K-3 Reading Level: 4.0 ATOS Book Level: 4 AR Interest Level: LG AR Points: .5 AR Quiz: 132802EN Reading Counts Level: 4.5 Reading Counts Points: 1 Lexile Measure: 840 Lexile Code: AD (Adult Directed).