The Ladybird Do You Know? book series is based on STEM and provides reading materials for children aged 5+ who are learning English as a foreign or second language. These non-fiction books include videos, project work, and critical thinking activities. Each book poses a series of BIG questions about STEM topics, such as nocturnal animals and bridge building, developing children's language, communication, and inquiry skills. The five levels progress from CEFR Pre-A1 to A2. Money, a Level 3 Reader, is A1+ in the CEFR framework and supports YLE Movers exams. The longest text consists of sentences with up to three clauses, some future expressions, comparisons, contractions, and relative clauses. Learn more about trade, gold, and digital currencies.