Trees are terrific! But how do they work?This chunky board book has been specially designed for little hands, with interactive, peep-through pages to grasp and explore. Curious readers will love learning all about this TREE-mendous plant: how it grows from seed to seedling, then sapling, and changes with the seasons, too. A super-simple first introduction to trees with layered die-cut board book pages. Also available: How It Works: Tractor, How It Works: Rocket, How It Works: The Body, How It Works: Dinosaur, How It Works: Digger, How It Works: Shark, How It Works: Fire Engine.