In Phase 5 children are introduced to new graphemes for reading. Some of these graphemes represent phonemes (sounds) that they have already learnt a grapheme for. For example, in Phase 3 children were taught 'ai' as the grapheme for the phoneme /a/ (as in rain). In Phase 5, children are taught that the phoneme /a/ can also be represented by the graphemes 'ay' (as in play) or 'a-e' (as in make). This variation needs to be taught as it is common in our language system.