When Martin's imagination starts running away with him on his first day of school and doesn't let him pay attention, his teacher asks him if he is on the moon, and though he is embarrassed at first, when he shares what is on his mind he inspires a class activity. Interest Level: K-3 Reading Level: 2.2 ATOS Book Level: 3.9 AR Interest Level: LG AR Points: .5 AR Quiz: 151292EN Lexile Measure: 750 Lexile Code: AD (Adult Directed).