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Bron: http://www.ted.com/speakers/terry_moore.html

X for Unknown

X stands for ‘unknown’. Everybody knows that. But why has it always got to be X? Why not A or B?

You are going to watch a 4-minute TED-talk by Terry Moore in which he explains how the symbol X came to be used for the unknown.

  • Datum 17/01/2013
  • Opdrachtnr 081
  • Leerjaar 6
  • Niveau VWO
  • Categorie kijken en luisteren
  • Tijdsduur 10-15 min
  • Werkvorm individueel, klassikaal
  • ERK B2