The series is based on 500 basewords and should be used with the Echo Reading CDs. Inside the back cover of each book is a list of the words. A numeral beside each word indicates the number of times it occurs in the series. On the facing page, is a transcript of the story, with the 500 words and their extensions in black, showing where they have been used. A large colour story map is located on the centre pages of each book.
ISBN # 1 876424 30 3