Bullfrog Books

In Animal Tracks, beginning readers will learn to identify different forest animal tracks. Carefully leveled text provides defining details for each animal's tracks, while accompanying photos More →

Earth Basics presents a high-interest STEM introduction to the materials that make up our world. Each book covers one of Earth's four basic materials, including how it forms and changes,… More →

Why do we see rainbows after it rains? How does a hurricane form? Learn the answers to some of the most common science questions about the world around us in this engaging series. Each book… More →

Earth Basics presents a high-interest STEM introduction to the materials that make up our world. Each book covers one of Earth's four basic materials, including how it forms and changes,… More →

Baby animals are born to be wild! See how wild baby animals learn from their mothers to find food, keep clean, live in groups, and survive in their natural habitats in Baby Animals in the… More →

Baby animals are born to be wild! See how wild baby animals learn from their mothers to find food, keep clean, live in groups, and survive in their natural habitats in Baby Animals in the… More →

World of Whales introduces beginning readers to our oceans' different whale species. Learn about each marine mammal's distinct features, diets, habitats, and behaviors. Bright, full-color… More →

Working Horses introduces beginning readers to different kinds of working horses, including farm horses, police horses, race horses, and therapy horses. Learn about the duties and… More →

In Skunk Kits in the Wild, beginning readers will learn about baby skunks as they grow up and leave their den. Follow along as skunk kits learn from their moms. Vibrant, full-color photos and More →

In Rabbit Kits in the Wild, beginning readers will learn about baby rabbits as they grow up and leave their nest. Follow along as rabbit kits learn to leave their nest. Vibrant, full-color… More →

In Water, beginning readers are introduced to the water cycle, how water shapes the world, and how all living things depend on water every day. Vibrant, full-color photos and carefully… More →

In Minerals, beginning readers are introduced to Earth's minerals, where they can be found, and how people use them in everyday life. Vibrant, full-color photos and carefully leveled text… More →