This column includes activities inspired by children's literature. This month's trade books teach students about external and internal structures that allow animals and humans to survive. This months trade books are: (1) "Creature Features" (Steve Jenkins and Robin Page); and (2) "Body Actions" (Shelley Rotner and David A. White). In the first activity students explore external structures that help animals survive. In the second activity students explore different body systems to determine what purpose they serve in helping a human survive.