Description Letter Sounds Sample Book Science letter sound readers introduce the first 21 letter sounds. They also have a strictly controlled vocabulary that follows the letter-by-letter progression along with ‘tricky words’. The set includes 12 non-fiction readers with clear photographic images. Curriculum Topic Animal Science Year 1 Age 4+ Book # Book Title Letter Sounds 1 Pets Revision of all Phase 2 sounds 2 Cats Revision of all Phase 2 sounds 3 Dogs Revision of all Phase 2 sounds 4 Ducks Revision of all Phase 2 sounds 5 Pigs Revision of all Phase 2 sounds 6 Rabbits Revision of all Phase 2 sounds 7 Rats Revision of all Phase 2 sounds 8 Bugs Revision of all Phase 2 sounds 9 Cubs and Kids Revision of all Phase 2 sounds 10 Big Cats Revision of all Phase 2 sounds 11 A Hen's Egg Revision of all Phase 2 sounds 12 Dog on the Run Revision of all Phase 2 sounds