What is Stonehenge? Why is there a great wall in China? Find out more about pyramids, desert cities and old engineering around the world. Covering a range of STEM topics from nocturnal animals to climate change, Do You Know? takes an enquiry-based approach, developing children's language, communication and investigation skills. Recommended for children aged 7+, 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. The longer text is made up of sentences with up to three clauses, some expression of future meaning, comparisons, contractions and relative clauses.