The Ladybird Do You Know? graded readers series comprises a range of non-fiction STEM titles for young learners of English. Covering a variety of topics, Do You Know? adopts an enquiry-based approach, and includes motivating video content, project work and critical thinking activities to develop students' linguistic and twenty-first century skills. There are four levels progressing from CEFR level Pre-A1 to level A2. Each reader is accompanied by online video content, audio, video and comprehension activities, and suggestions for project work.