This supplemental homework packet was designed to provide independent practice with concepts taught in daily, systematic phonics instruction. A cover letter is included, meant for communication with parents regarding what their child is working on in class. This packet focuses on the 1-1-1 rule to help determine whether an ending consonant should be doubled before adding a suffix. There are three, basic points to consider: Is the word one syllable? Is the word either closed or r-controlled? Does the word only have one consonant that follows the vowel? If you can answer “yes” to all three of these questions, then the ending consonant is usually doubled before adding the suffix to retain the short vowel sound in the base word. There are exceptions to the 1-1-1 rule. For example, any base word ending in x will never be doubled. Irregularly spelled target word practice is also included.