Bullfrog Books

Did you know some Corvettes race? Or that they're made in Kentucky? In Corvette, beginning readers learn about this car brand, when and where the cars were first made, what its logo… More →

What is a liquid? What are its properties, and how can it turn to a solid or gas? In Liquids, beginning readers learn about this state of matter and how it applies to their everyday lives.… More →

A large, powerful dinosaur uses its razor-sharp teeth to tear into prey. What is this creature? It is a Tyrannosaurus rex! In Tyrannosaurus Rex, readers learn all about this dinosaur's… More →

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Did you know some Corvettes race? Or that they're made in Kentucky? In Corvette, beginning readers learn about this car brand, when and where the cars were first made, what its logo… More →

Did you know that Lamborghini doors swing up? In Lamborghini, beginning readers learn about this car brand, when and where the cars were first made, what its logo is, and some of its most… More →

A small dinosaur catches prey with its long, sharp claws. What is this creature? It is a velociraptor! In Velociraptor, readers learn all about this dinosaur's appearance, behavior, and how… More →

What is volume? How can we measure it? In Volume, beginning readers learn about volume as it applies to measuring liquid and solid ingredients to bake cookies and fill a cookie jar. Vibrant,… More →

Did you know that many Ferraris are red? Do you know what the Ferrari logo is? In Ferrari, beginning readers learn about this car brand, when and where the cars were first made, what its logo More →

Did you know that a Porsche's engine is in the back of the car? In Porsche, beginning readers learn about this car brand, when and where the cars were first made, what its logo is, and some… More →

Did you know that Lamborghini doors swing up? In Lamborghini, beginning readers learn about this car brand, when and where the cars were first made, what its logo is, and some of its most… More →

In Thoroughbred Horses, beginning readers will learn about the physical features, characteristics, and common duties of thoroughbred horses. Vibrant, full-color photos and carefully leveled… More →