Lesson plan
O9
O9 or O-9 may refer to: * , an O-class submarine of the United States Navy * O-9, the pay grade for the following senior officer ranks in the U.S. uniformed services: ** Lieutenant General in the Army, Marine Corps, Air Force, and Space Force ** Vice Admiral in the Navy, Coast Guard, Public Health Service Commissioned Corps, and NOAA Commissioned Officer Corps * Douglas O-9, a variant of the Douglas O-2, a 1920s American observation aircraft * O9 (model railways), a narrow-gauge model railway scale * Oregon-IX (OIX), an internet exchange; see List of Internet exchange points
Article summary
O9 or O-9 may refer to: * , an O-class submarine of the United States Navy * O-9, the pay grade for the following senior officer ranks in the U.S. uniformed services: ** Lieutenant General in the Army, Marine Corps, Air Force, and Space Force ** Vice Admiral in the Navy, Coast Guard, Public Health Service Commissioned Corps, and NOAA Commissioned Officer Corps * Douglas O-9, a variant of the Douglas O-2, a 1920s American observation aircraft * O9 (model railways), a narrow-gauge model railway scale * Oregon-IX (OIX), an internet exchange; see List of Internet exchange points
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.