Dad is fixing Kim's bike, but a cog bounces away. Will Kim be able to get it back? (Letter-sounds featured: m d g o c k) The Cog is part of the Rocket Phonics teaching and learning programme from Reading Planet. Rocket Phonics ensures that every child achieves phonics success. This fully-decodable Target Practice reading book provides focused practice of a small group of letter-sounds. The book also includes useful notes and activities to support reading in school and at home as well as comprehension questions to check understanding. Reading age: 4-5.