This A5 size book is a small version of the 380 Big Book. This book should be used in conjunction with the THRASS 380 Big Book, the THRASS 500 resources and the THRASS Phoneme-Grapheme Books. In this 380 Book (and the Big Book) each word is segmented into graphemes. Teach classes or groups, with each pupil/student using their own desk-size copy of the large class book, how to blend and segment the phonemes in the 380 Essential High Frequency Words and to name the letter or letters in the graphemes.