Photographs and text follow the life cycle of the snail from hatching to adulthood, and provide information about how the insects eat, mate, lay eggs, and grow shells. Life Cycles (Child's World) series. Interest Level: K-3 Reading Level: 4.0 ATOS Book Level: 4.2 AR Interest Level: LG AR Points: .5 AR Quiz: 146806EN Guided Reading Level: P.