Discusses how the United States gained ownership of the Oregon Territory, who discovered the best routes west, and the obstacles pioneers faced on their journeys along the Oregon Trail.

Text and maps examine the Lewis and Clark Expedition that began in 1804.

Presents information on how James Marshall made a discovery that changed United States history.

Photographs, maps, time lines, and easy-to-follow text describe the events surrounding the 2010 British Petroleum oil spill in the Gulf of Mexico.

"A series to build strong financial habits early on in life! How can I make money? What is inflation? What is the difference between a debit card and a credit card? Economics-and more specifically, money-play such a large role in our lives. Yet there are many mysteries and misconceptions surrounding the basic concepts of finance and smart money management. This set of True Books offers students the know-how they'll need to start on the road to financial...

An exploration of the Ute Indians, discussing the nation's relationship with settlers, culture, ceremonies, migrations, and more.

Projects and experiments use soap to explain such topics as surface tension and air currents, as well as why soap gets things clean.