Engaging fiction and non-fiction fully aligned to each week of Essential Letters and Sounds, allowing children to consolidate their phonic knowledge through reading in context. These fully decodable readers are 100% matched to the phonic progression of Essential Letters and Sounds. Essential Letters and Sounds is a systematic synthetic phonics programme validated by the Department for Education. These readers complement your existing decodable readers from Oxford University Press and can be used alongside them to support the teaching of Essential Letters and Sounds. The Lost Den allows children to apply their phonics learning from Year 1, Autumn 2, Week 6 of Essential Letters and Sounds.