Unit 3 - We The People

• The Constitution
• The White House
• Project VOTE
• Texas Secretary of State: Gwyn Shea
• U.S. House of Representatives
• U.S. Senate
• Ben's Guide to U.S. Governement for Kids
• America's Library - Jump Back in Time
• Bill of Rights Institute

Unit 4 - American Frontier

• Go West Across America with Lewis and Clark
• PBS Online - Lewis and Clark: Into the Unknown
• PBS Online - Lewis and Clark: Classroom Resources (For Teachers)
• PBS Online - Lewis and Clark
• Gold Rush! California's Untold Stories
• The Oregon Trail
• The Star-Spangled Banner
• America's Library - Jump Back in Time

Unit 5 - A Nation Torn

• Civil War History Center and Classroom
• Gettysburg National Military Park Kidzpage
• America's Library - Jump Back in Time

Unit 6 - Expanison and Change

• Immigration and Naturalization Service:
  History, Geneology, and Education
• Immigration, Ellis Island
  Ellis Island: Through America's Gateway
• An Interactive Tour of Ellis Island
• Immigration: Stories of Yesterday and Today
• Statue of Liberty National Monument and Ellis Island
• U.S. Census Bureau: We the Americans
• America's Library - Jump Back in Time
• Stately Knowledge

Unit 7 - Science, Technology Brings Change

• Inventor of the Week Archives
• Spotlight Biography: Inventors
• Smithsonian Instititution: Inventors & Innovations
• Thomas Alva Edison as a Scientist & Inventor
• Eli Whitney
• A Man Named Birdseye
• America's Library - Jump Back in Time