The Fitzroy Readers use a phonic approach to literacy and consist of ninety carefully graded story books. Each reader builds on the one before by introducing a new sound or digraph, and a few special words to learn by memory. Once a child has learnt the new sound and the special words, they can proceed to read the story. The success of the Fitzroy Readers lies in the strictly sequential progress from one story to the next. The Fitzroy Readers are sold in packs of ten.