Simulation involves students creating a smaller-scale version of a real-life situation through role playing, materials manipulation, or computer interaction. As part of a WWII unit, one high school class conducted a "Truman trial" simulation where students researched and took on roles like the president, lawyers, and jurors to critically examine Truman's decision to drop atomic bombs on Japan. The simulation benefited students by piquing their interest in WWII and requiring them to think critically and synthesize information through their roles in the trial.