A devoutly Christian slave becomes separated from his wife and family when he is sold to the brutal planter Simon Legree.

Suggests experiments and projects to demonstrate the properties of air and the mechanics of flight by such objects as airplanes, balloons, and kites.

Relates the causes, events, and aftermath of the witchcraft trials which took place in Salem, Massachusetts, in the early 1690's and resulted in the deaths of more than nineteen people.

Describes how the human brain and nervous system function and examines recent theories on the origins of intelligence.

Describes the conditions and varying degrees of hearing loss and deafness, and discusses methods by which the hearing-impaired can communicate with others.

Describes the legal setting of custody disputes and discusses how the rights and obligations of parents and children vary under different circumstances.

Discusses animals with no backbones, including protozoans, sponges, worms, mollusks, arachnids, and arthropods.

Presents the disorder known as Down Syndrome, covering such aspects as historical background, medical causes, physical and mental limitations, and development from infancy through adulthood, including sexuality, social skills, and group homes.