Self-contained Learning Centers to help students become better readers through practice of spelling choose from 4 different grade levels. PreK-K and K-1contain 13 centers with topics including visual discrimination, rhyming words, upper and lowercase letters, consonant sounds and more. Grades 1-2 contain 12 centers focusing on long and short vowels, consonant and vowel digraphs, initial and final blends, word families, inflectional ending and more. Grade 2-3 focus on variant vowel and consonant sounds, diphthongs, digraphs, silent letters, word families, inflectional and plural ending plus more.