Overviews - Presentations in PowerPoint Format for 5th grade, 8th grade, and High School
Free Presentations in PowerPoint format
US History - Huge group of powerpoints(Palooza)
United States History - Intro through the Civil War (many) C.J. Cox
7th grade American History, from Pre-History through the Civil War (Mr. Zindman)
8th grade American History, from Civil War through Modern Times (Mr. Zindman)
THE AMERICAN NATION Eleventh Edition - 1080 slides
US Military - Army, Navy, Air Force, Marines, Coast Guard
For Kids
American History Games and Interactives
Sheppard Software games - free webgames
Fifth Grade: United States History
US History - Free Online Games under each subject
For Teachers
Video Clips, Mini Movies, Full Length Movies
HS - American History in the Making (video, interactives)
US History - Lessons for all eras, video