Special phonics sounds are easy when your child remembers the clue word that goes with them, such as ck in duck. Reinforce the special sounds introduced in the Basic Phonics Reading Program with the Clue Word Cards. Each card has a special phonics sound on one side of the card and its corresponding clue word on the opposite side of the card. The 119 cards are color-coded to match the phonics charts so that you can quickly find just the cards that you want to review. The clue-word side of the card also includes two other words that incorporate the special sound for the parent’s reference. K5–gr. 1.