"Simple text and full color photographs introduce young readers to police cars. Intended for students in kindergarten through third grade"--Provided by publisher.

"Simple text and full color photographs introduce young readers to big rigs. Intended for students in kindergarten through third grade"--Provided by publisher.

"Simple text and full color photographs introduce young readers to skid steer loaders. Intended for students in kindergarten through third grade"--Provided by publisher.

"Introductory text explains the functions and physical concepts of the muscular system with color photography and simple scientific diagrams. Intended for students in grades three through six"--Provided by publisher.

"Introductory text explains the functions and physical concepts of the skeletal system with color photography and simple scientific diagrams. Intended for students in grades three through six"--Provided by publisher.

"Simple text and full color photographs introduce young readers to tow trucks. Intended for students in kindergarten through third grade"--Provided by publisher.

Clear the road for the speeding ambulance! These vehicles need to get to an emergency as fast as possible. Learn about the equipment an ambulance carries and how ambulance workers save lives.

Pulleys are simple machines used to lift and move loads. Builders use pulley systems to lift tools or materials. Elevators use pulleys to move up and down. Kids will learn how pulleys make work easier and how they are often part of complex machines.

Gases, liquids, and solids are all matter. Everything that has mass and takes up space is matter. This book instructs eager learners about the different forms of matter and explains how matter can change forms.

Levers are simple machines that make work easier. There are three different classes of levers. Students will learn what levers are, how the classes of levers differ, and how the construction of levers makes work easier.