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Truman and the Dropping of the Atomic Bomb: Graphic Organizer

Truman's decision to drop the atomic bomb is laid out in graphic-organizer notes with a primary source quote, pro and con arguments, Hiroshima and Nagasaki casualty data and six immediate results.
Grades
Grades 8–11, High School, Middle School
File type
PDF
Preparation
Print ready

Updated Oct 13, 2026

Subject
Social Studies, History, History: USA
Topic
World War II, Truman
Resource types
Teacher Tools, Graphic Organizers
Preparation
Print ready

About this resource

What's inside this resource

Harry S. Truman, the 33rd President of the United States, played a pivotal role in the development and use of atomic bombs during World War II. Truman assumed the presidency on April 12, 1945, following the death of President Franklin D. Roosevelt. At that time, the Manhattan Project, a secret research program focused on developing atomic weapons, was already underway. As President, Truman was faced with a difficult decision regarding the use of atomic bombs against Japan. The Manhattan Project had successfully created two atomic bombs, and Truman had to decide whether to deploy them as a means to end the war. After the war, Truman focused on preventing the spread of nuclear weapons. He supported the creation of the United Nations and played a key role in establishing the Baruch Plan, which proposed international control of atomic energy to prevent further proliferation. Truman's decision to use atomic bombs on Hiroshima and Nagasaki remains one of the most consequential actions of his presidency. It ushered in the nuclear age, shaped the course of history, and sparked ongoing discussions about the use and ethics of atomic weapons.

Teacher-prepared notes show students what is important and how ideas relate, and offer a model for how students should take notes themselves (Marzano et al., 2001). This graphic organizer gives students two primary source quotes regarding Truman's use of the bomb. The notes then explain some pro/con arguments about the use of the bomb. Lastly, the notes give students a chance to look at the six immediate effects of the bomb. Comes with a fill-in-the-blank version.

Clipart Credit: By Prince Padania

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Evaluate arguments for and against Truman's decision to use the atomic bomb
  • Compare casualties at Hiroshima and Nagasaki using a chart

Skills covered

  • Primary source analysis — students complete and interpret a quote about the bomb
  • Weighing historical arguments — students review reasons for and against the decision

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Resource details

Concepts & topics

Core concepts

  • Harry S. Truman
  • Atomic bomb
  • Hiroshima and Nagasaki
  • World War II
  • Cold War

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