ðə vˈɛɹiənt dᵻskɹˈaɪbd ɪn ðɪs ˈɑːɹɾɪkəl ɪz ðə wˈʌn ˈædvɚtˌaɪzd baɪ ðɪ ˈɪŋɡlɪʃ bɹˈɪdʒ jˈuːniən fɔːɹ jˈuːs ɪn pɹˈaɪmɚɹi skˈuːlz æz ɐ wˈeɪ tʊ ɪmpɹˈuːv pjˈuːpəlz pɚfˈoːɹməns ɪn mˌæθɪmˈæɾɪks.
The variant described in this article is the one advertised by the English Bridge Union for use in primary schools as a way to improve pupils' performance in mathematics.