Books in Bullfrog Books: Machines at Work series

In Police Cars, early readers will learn about the different parts of a police car and how they help police officers do their jobs. Vibrant, full-color photos and carefully leveled text will engage emergent readers as they discover the unique features of these machines.

In Tanks, early readers will learn about the different parts of a tank that help keep the crew safe in battle. Vibrant, full-color photos and carefully leveled text will engage emergent readers as they discover the unique features of these machines.

In School Buses, early readers will learn about the parts of a school bus that help keep students safe as they travel to and from school. Vibrant, full-color photos and carefully leveled text will engage emergent readers as they discover the unique features of these machines.

In Fighter Jets, early readers will learn about the parts of fighter jets that help them fly fast and hit targets in battle. Vibrant, full-color photos and carefully leveled text will engage emergent readers as they discover the unique features of these machines.

In Motorcycles, early readers will learn about the different kinds of motorcycles people ride and what those bikes are used for. Vibrant, full-color photos and carefully leveled text will engage emergent readers as they discover the unique features of these machines.

In Ships, emergent readers will learn about the different types of ships. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover how ships are used to transport goods and people.

How are street sweepers used? What are the special parts of a street sweeper? How do street sweepers work? Learn more about these important cleaning machines inside.

From hoisting construction materials to swinging wrecking balls, cranes are very important. Get the basics on these cool machines in this interesting book.

A simple look at forklifts and how they work.

How are graders used? What are the special parts of a grader? How do graders work? Learn more about these important machines inside.

What are bulldozers used for? How do they move? Learn the basics about these powerful machines inside.

Find out all about trucks, from car transporters and dumper trucks to the latest monster trucks. Zoom in, see them up close and discover what makes them work. Then try the quiz to see how much you've learned!