Article
World War 1

Worldwar1.com: Trenches on the Web: Timeline: 1871 1914 Origins of the Great War

For Students 9th - 10th
Provides a wealth of information about the origins of the World War I, and the maneuvers and alliances that took place in the years preceding it.
Website
National Archives (UK)

Uk National Archives: First World War Sources for History

For Students 9th - 10th
A comprehensive site filled with historically significant documents on the UK during World War I.
Website
Gilder Lehrman Institute of American History

Gilder Lehrman Institute: History Now: The Progressive Era to the New Era 1900 1929, World War I

For Students 9th - 10th
[Free Registration/Login Required] Learn about World War I from the primary source documents contained here. Also contains a short overview, lesson plans, timelines, maps, and images, as well as recommended videos, books, and other...
Website
World War 1

Worldwar1.com: Trenches on the Web: Timeline: Index

For Students 9th - 10th
A timeline of events that influenced the eventual outbreak of World War I. Many of the events have links to articles or more in-depth timelines.
Interactive
PBS

Pbs: The Great War: Interactive Timeline

For Students 9th - 10th
This site has an interactive timeline of World War I. Choose a year to see important events listed chronologically. You can click on battles and names of famous people to read accompanying thoughts of historians.
Interactive
PurposeGames

Purpose Games: World War I Timeline

For Students 9th - 10th
23 question game includes a timeline of a small sample of events covering World War I.
Handout
Library of Congress

Loc: A Guide to World War I Materials

For Students 9th - 10th
A web guide of links to World War I resources throughout the Library of Congress web site and beyond.
Unit Plan
National Archives (UK)

National Archive: The Great War: 1914 1918

For Students 9th - 10th
Students can examine original sources and how these have been used to support different viewpoints and perspectives on the Great War.