Lesson plan
Blueback chart
A blueback chart was a distinctive type of privately published nautical chart that became the standard for merchant mariners during the 19th century. They are named for the tough, blue manila paper used to reinforce the back of the charts, making them durable enough for use in the harsh conditions of a ship's bridge.
Article summary
A blueback chart was a distinctive type of privately published nautical chart that became the standard for merchant mariners during the 19th century. They are named for the tough, blue manila paper used to reinforce the back of the charts, making them durable enough for use in the harsh conditions of a ship's bridge.
Key claims
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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.