Book excerpt: Understanding letter sounds and word formation is an essential piece to the reading proficiency puzzle. Spectrum Word Study and Phonics for grade 6 guides children through digraphs, diphthongs, Greek and Latin roots, and more. Filled with engaging exercises in a progressive format, this series provides an effective way to reinforce early language arts skills. --Mastering language arts is a long processÑstart with the basics. Spectrum Word Study and Phonics is here to help children begin a successful journey to reading proficiency. With the help of this best-selling series, your child will improve language arts skills through practice and activities that focus on phonics, structural analysis, and dictionary skills.