Lesson plan

ARRA (computer)

The ARRA (Automatische Relais Rekenmachine Amsterdam; Automatic Relay Calculator Amsterdam) was the first Dutch computer, and was built from relays for the Dutch Mathematical Centre ( ), which later became the Centrum Wiskunde & Informatica (CWI).

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Article summary

The ARRA (Automatische Relais Rekenmachine Amsterdam; Automatic Relay Calculator Amsterdam) was the first Dutch computer, and was built from relays for the Dutch Mathematical Centre ( ), which later became the Centrum Wiskunde & Informatica (CWI).

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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