Radar Plot from Station Opana, Pearl Harbor, Hawaii
The Great Depression and World War II (1929-1945)
A National Archives Foundation educational resource using primary sources from the National Archives
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As directed in the activity, students will study the document and then be asked to complete the worksheet. When they are finished with the worksheet, the activity will reveal to them the document’s origin and use. Then, students will be asked how knowing this information may alter their conclusions. They will email their conclusions to you. (Their email messages will include their responses to the worksheet’s questions.)
Students will use the interpretation tools available in the activity to analyze evidence collected during the Congressional investigation of the Pearl Harbor Attack. It is the Radar Plot from Detector Station Opana in Hawaii, recorded on December 7, 1941. It will remind students of the surprise nature, as well as the scale, of the attack.