Focusing on three intellectual challenges at the core of historical understanding—time; scale; and pattern—will help teachers promote a more meaningful understanding of history for students.

This simulation illustrates for students that the most complex debates in American history are not necessarily between those for and against social change, but among those who agree on the goal, but disagree on the means.

The earliest American leaders upheld basic protections for civilians, prisoners of war, and sick and injured combatants. Such principles can serve as a guide today as we address difficult questions like the treatment of detainees and the issue of torture.

By studying moments in history where bystanders made a difference, teachers can motivate students to think critically in the face of social dilemmas.

Teaching about global events such as Haiti's earthquake can help prepare young people for playing an active role in the face of such daunting disasters.

Recent Supreme Court decisions generated surprising controversy, from gun control to First Amendment issues. In 2011, the Court will weigh in on cases dealing with the hiring of illegal immigrants, protests at soldiers' funerals, and selling violent video games.

A memo from John Kennedy's press secretary to Richard Nixon's press secretary prior to the first televised presidential debate in history serves as a jumping off point for studying the major issues of the 1960 election.