Randolph, Joanne

Provides information about tractors, explaining what they are and how they work.

Photographs and simple text teach young readers what dump trucks are, how they work, and what they are commonly used for.

Photographs and simple text teach young readers what wheel loaders are, how they work, and what they are commonly used for.

Photographs and simple text teach young readers what bulldozers are, how they work, and what they are used for.

Explains how helicopters work, and looks at how helicopters are used in a variety of emergency situations.

Discusses how coast guard boats are used to help people in emergency situations.

Examines the history of the Iroquois League and its influence on the formation of the United States government.

Color photos and simple text show the parts of a snowplow and the important job the machine does.

Photographs and simple text teach young readers what concrete mixers are, how they work, and what they are used for.

Describes the physical characteristics, habitat, hunting tactics, enemies, and life cycle of hammerhead sharks, as well as the extent of their danger to humans.