Historical Thinking Matters provides high school students (9-12) with a framework that teaches them to read documents like historians. Using these "habits of mind," they will be able to interrogate historical sources and use them to form reasoned conclusions about the past. Equally important, they will become critical users of the vast historical archives on the web. Historical Thinking Matters equips students to navigate the uncharted waters of the World Wide Web. The site is the winner of the American Historical Association's 2008 James Harvey Robinson Prize for an Outstanding Teaching Aid.