This is a website full of blank maps. If you guys want to do a labeling quiz or a coloring worksheets, students might learn a lot from these geography stuff.
This website is an immense interactive map of the Eastern front during WWII. It is filled with chronological events, primary documents, pictures, interview, and many other resources.
This is one of the most comprehensive search engines and websites in the world on the Vietnam War. It has over 3.2 million pages scanned materials from government and military documents, newspaper articles, photographs, maps, artifacts, sound/audio recordings, etc. Great for finding material, resources, and primary sources.
I have used this link in one of my classes at the University.
It includes documentation of every slave voyage (from where it left and where it was headed), how many slaves were on the voyage, and from where they were from.
It contains maps, graphs, etc., and is very interactive.
The Wisconsin Historical Society has access to the original journals, maps, and other artifacts (some are just typed in and not the original document) from several important players in Illinois and Wisconsin History
The Junior General project is one that teaches students about military history and strategy by providing various simulations using historical miniatures (paper or plastic toy soldiers), maps and counters, and matrix arguments. The simulations are designed for middle school students.
This site analyzes Boston at before and at the beginning of the Revolutionary War. It includes, commentaries on significant events and people, maps, pictures, and primary sources