Description Dandelion Readers support a systematic phonics approach on learning vowel sounds. Designed for readers moving beyond CVC, Level 1 includes 12 books and introduces one spelling for each of the vowel sounds, such as the spelling for the sound of long A. Book 1: ai. Book 2: ee. Book 3: oa. Book 4: ur. Book 5: ea. Book 6: ow. Book 7: oo. Book 8: igh. Book 9: oo. Book 10: aw. Book 11: oi. Book 12: ar.