Human Anatomy Coloring Book with Facts: 35+ Coloring Activities with Facts about the Human Body by Christy Ni, This coloring activity book will help kids learn how the body works, with a kid-friendly introduction to human anatomy. Filled with clear drawings of different body systems, along with all sorts of cool trivia, kids will have a blast learning as they color. Paperback, 76 pages. Recommended for ages 4 to 8 years old.