Lesson plan
4D (train)
The 4D was a one-off prototype double deck electric multiple unit built for the Public Transport Corporation in Victoria, Australia, for operation on the Melbourne railway system. It remains the only double deck train to have ever operated in Melbourne. The train's name stood for "Double Deck Development and Demonstration". Depending on sources, the intention was for this train to be the demonstration unit for a future order of either 20 or 50 extra sets, had the tests been successful.
Article summary
The 4D was a one-off prototype double deck electric multiple unit built for the Public Transport Corporation in Victoria, Australia, for operation on the Melbourne railway system. It remains the only double deck train to have ever operated in Melbourne. The train's name stood for "Double Deck Development and Demonstration". Depending on sources, the intention was for this train to be the demonstration unit for a future order of either 20 or 50 extra sets, had the tests been successful.
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.