The card packs are an integral part of the PAF Reading Program. The Alphabet and Key Word Picture Cards contain illustrations of a key word for each new sound and the letter or letters that make the sound. The Review Packs contain letters, letter combinations, non-phonetic words, and homonyms. They are used at the beginning of each PAF lesson to review recently taught skills and any skills that children have not mastered. The cards in the Review Pack are used to develop automatic sound-symbol associations which are the foundation of fluent reading and spelling.