History Matters is a wonderful online resource for history teachers and students. Among the many digital resources are lesson plans, syllabi, links, and exhibits.
The site gives alot of useful information for teachers and students, having many primary sources, examples of syllabi, and teaching strategies for U.S. history.
Resource for supreme court cases that have 3 different reading levels for the various levels of education. It gives a description of the case and questions to consider after reading and strategies for teaching case studies
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.