Lesson plan

Area code 021

021 is: * in Brazil, the telephone area code for the city of Rio de Janeiro and surrounding cities (Greater Rio de Janeiro) * in China, the telephone area code for the city of Shanghai. * in Indonesia, the area code for the city of Jakarta and surrounding cities. * in Iran, the telephone area code for the capital city of Tehran. * in Ireland, the area code for the city of Cork and a surrounding part of County Cork. * in Libya, the telephone area code for the capital city of Tripoli. * in Nepal, the Nepal Telecom telephone area code for the district of Morang. * in New Zealand, the "area code" for cellular phones on the Vodafone network. * in Pakistan, the telephone area code for the city of Karachi. * in Serbia, the area code for the city of Novi Sad. * see Telephone numbers in South Africa. * in Sweden, the area code for the city of Västerås; see Telephone numbers in Sweden. * in Switzerland, the area code for the city of Lausanne and surrounding cities. * in the United Kingdom, the former area code for Birmingham England (changed to 0121 on 16 April 1995).

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Article summary

021 is: * in Brazil, the telephone area code for the city of Rio de Janeiro and surrounding cities (Greater Rio de Janeiro) * in China, the telephone area code for the city of Shanghai. * in Indonesia, the area code for the city of Jakarta and surrounding cities. * in Iran, the telephone area code for the capital city of Tehran. * in Ireland, the area code for the city of Cork and a surrounding part of County Cork. * in Libya, the telephone area code for the capital city of Tripoli. * in Nepal, the Nepal Telecom telephone area code for the district of Morang. * in New Zealand, the "area code" for cellular phones on the Vodafone network. * in Pakistan, the telephone area code for the city of Karachi. * in Serbia, the area code for the city of Novi Sad. * see Telephone numbers in South Africa. * in Sweden, the area code for the city of Västerås; see Telephone numbers in Sweden. * in Switzerland, the area code for the city of Lausanne and surrounding cities. * in the United Kingdom, the former area code for Birmingham England (changed to 0121 on 16 April 1995).

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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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