Dandelion Readers, Level 4 introduce more alternative and complex spellings for vowels, consonants and suffixes. The reader is taught a number of latin suffixes eg. '-tion' which come at the end of many words. These are taught as syllables which enable the pupil to read many multisyllabic words with these endings.
A set of 14 books.
Dandelion Readers - Reading and Spelling Activities - the Extended phonic Code Level 4 Workbook also available which complements this set of books.