Letters and Sounds is a systematic approach for teaching children to read using phonics. It is split into six phases where letter sounds are introduced in a progression so that children can build on their knowledge and skills throughout the program. The six phases are: phonemic awareness (phase 1), letter sounds (phase 2), phonics (phase 3), blends (phase 4), vowel sounds (phase 5), spelling (phase 6). Each phase has been colour-coded and resources can be used interchangeably across the phase accordingly.