O'Donnell, Kerri

Presents a concise look into some of the world's natural wonders and what makes each of them unique, and describes how to convert distance measurements to metric units.

Uses primary source documents, narrative, and illustrations to recount how the mid-nineteenth century California gold rush affected Americans and immigrants and how it shaped history.

Explores the history of Egypt's pyramids, including a brief look at how they were constructed, who was buried in them, and the religious significance of the structures and their contents.

Describes the unique physical traits and behaviors of eight kinds of insects, including peanut-head bugs, walking sticks, and dung beetles.

Photographs, illustrations, and text describe how math is used to create graphical representations of data while learning about the ecosystem in Denali National Park in south-central Alaska.

Discusses the Revolutionary War, and colonial life in New York State.

Photographs and text introduce children to vultures, describing what they look like, where they can be found, what they eat, how they hunt, and what role they play in the natural world.

Full-color photographs and text describe various types of hammerhead sharks, what they look like, where they live, and what they eat.

Explains the math concept of expanded notation, and uses expanded notation to plan an imaginary trip around the world.

Presents an introduction to solving algebraic equations, and provides an overview of the ancient civilizations of Greece and Rome.