Pearl Harbor

Why this matters

Roosevelt asked Congress to declare that a state of war already existed, not to begin one, and that choice of words is easy to read past on a first pass through his address. Slowing down on the phrase turns the speech from a formality into an argument, built for an audience of about 81 percent of American homes listening on the radio.

I make the closing verdict, victory or mistake, a two-source assignment on purpose, because deciding requires the casualty numbers and Roosevelt's own words together, not a gut reaction to either alone. Students who use only the numbers tend to call it an obvious mistake.

From one teacher to another

December 7, 1941 gets facts here, not drama: the 80 percent of its oil Japan imported from the United States, the 110-minute attack from first wave to the sinking of the USS Arizona, and a final count of 2,403 Americans dead. Students calculate for themselves what share of that total came from the Arizona alone, then read Roosevelt's actual address to Congress the next day, where about 81 percent of American homes were listening on the radio, to see exactly why he asked for a declaration that a state of war already existed rather than one to begin it. The closing task asks them to take a side on whether the attack was a Japanese victory or a Japanese mistake, using the casualty numbers and the address as their two required pieces of evidence, which keeps the debate grounded in the record instead of gut reaction.