He raupapatanga tau ka whakanōhia ki tētahi rārangi. He ōrite te tawhiti, mai i tētahi pūwāhi i te rārangi tau ki tētahi. E hāngai ana ia pūwāhi ki tētahi tau. Hei tauira:
A sequential order of numbers on a line. Points on the line are equidistant from each other. Each point corresponds with a number.
aho tau
Tuhia ngā tau e ngaro ana ki te rārangi tau.
Whakaaturia te ‘toru tāpiria te whā’ ki te rārangi tau.
Mō te tāpiritanga, me haere whakatematau i te rārangi tau. Mō te tangohanga, haere whakatemauī.