Jill Jet Box Set Phase 3 Decodable Chapter Books Jill Jet decodable stories offer children the opportunity to review and master their letter sounds, all whilst reading their very first chapter book series. Each early decodable chapter story has been written with controlled vocabulary, in accordance with the Rainbow Phonics scope and sequence (at Phase 3 level). Contains 12 Decodable Stories in 6 Books. Targets Phonics focus and Consonant Digraphs