Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Describes a variety of historic sites and monuments, from the Alabama-Tuskegee Institute National Historic Site to the Wyoming-Devils Tower National Monument.

A guide to the state seals and their historic background.

Brief text describes different styles of country music, including bluegrass, cowboy songs, and rockabilly; musical instruments; famous performers; the recording industry; and country music on television and radio.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

This book introduces chimpanzees (great apes), describing their physical characteristics, behavior, habitats, and endangered status.

Brief text explores how music evolved from the baroque to the classical style, discussing instruments, famous composers, and the orchestra.