Learn to read, write and spell at home or at school, all while having fun! Letter Sounds Workbook activities progress week by week around Phase 2 of the Letters & Sounds systematic phonics program. This workbook supports children as they begin to learn the 44 letter sounds of the English language.The Letter Sounds Workbook has been designed for 4 year olds and up, and is the second of six workbooks that together form the Letters & Sounds Workbook program. Workbook includes progressive map and achievement stickers.