The Red Cap

"Sets A-1 and A-2 each consist of six books, three of which focus on short vowels and three that focus on long vowels. Sets B-1 and B-2 each include six books that give practice in all the decoding skills found in Set A plus two groups of new skills: three of the books focus on consonant blends and digraphs and three focus on diphthongs, controlled vowels, and silent letters. Sets C-1 and C-2 each include six books that give practice in all of the skills found in Sets A and B and add new skills. Three books focus on spelling patterns, inflectional endings, and compound words and three focus on prefixes and suffixes and regularly spelled two-syllable words."--Publisher's website