Help children to understand vowel digraphs with this pack of 14 decodable reading books from the Dandelion Readers series. Each book looks at 2 or 3 different vowel sounds with a fun and simple story.The Level 2 books cover: Book 1: ai ay a; Book 2: ee e ea; Book 3: oa o ow; Book 4: ur er ir; Book 5: ea e ai; Book 6: ow ou; Book 7: oo ew ue; Book 8: igh i y; Book 9: oo oul u; Book 10: or a ow; Book 11: oi oy; Book 12: ar a al; Book 13: air are ere; Book 14: ear eer ere.