Text and photographs explore ways in which people change the land, from building houses and bridges to planting gardens.
Describes how the three branches of the federal government fit together, and the structure and function of each branch, and discusses the basic form and variations in state governments.
Follow the path of the earth, the sun, and the moon as day turns into night.
Why do things float? What happens to the food you eat? Why is it warm in summer? Find out in this lively book. Simple text, amazing photographs and illustrations, fun science activities and links to exciting recommended Web sites introduce young readers to the wonders of science.