This Collector's Set includes three volumes -- "Animals"; "Dinosaurs"; and "Why?" -- providing fascinating, level-appropriate facts alongside bright and colorful photographs and illustrations. Inspired by the award-winning "National Geographic Little Kids magazine," the "Little Kids First Big Book Collector's Set" is a visually compelling and approachable set of first reference books for 4- to 8-year-olds.Each book encourages interactivity, satisfies curiosity, and launches kids into a lifetime of exploration "