iCivics
I Civics: A Growing Nation
In this unit, students learn how the United States began to grow as soon as it became a nation, and they examine the effect of this growth on societies already established in North America. Register for a free account to download teacher...
Smithsonian Institution
Smithsonian Learning Lab: The Expansion of the United States, 1846 48
This online lesson plan shows students through primary sources how the borders of the U.S. changed in just a few years. They are asked to analyze maps and use map skills. All maps and worksheets are included as well as additional resources.
Curated OER
National Park Service: Fort Scott National Historic Site: The Mexican War
This is a very brief overview of the Mexican War, organized into the following sections: "Zachary Taylor's Army," "The Army of the West," and "Invasion of Mexico City." Includes links to related articles and websites.
Curated OER
Educational Technology Clearinghouse: Maps Etc: North America, 1840
A map of North America in 1840 at the time when the concept of "Manifest Destiny" was being applied to annex the Oregon Territory, Texas, and much of northern Mexico into the United States. The map is color-coded to show the extent of...