This book is filled with photos of kids running, jumping, riding bikes, and using all five senses. The photos are overlaid with illustrations of the nervous, skeletal, muscular, respiratory, and circulatory systems and major organs to show the amazing ways in which active bodies function. Interest Level: K-3 Reading Level: 4.7 ATOS Book Level: 4.7 AR Interest Level: LG AR Points: .5 AR Quiz: 153088EN Reading Counts Level: 4.3 Reading Counts Points: 2 Lexile Measure: 800 Lexile Code: AD (Adult Directed) Guided Reading Level: M. Teaching Books: https://school.teachingbooks.net/tb.cgi?tid=31743.