This series explores the world of machines. Technical artwork is presented as cutaways and exploded views to help children see inside. Captions clearly explain how components work and are backed up with handy annotations. Snippets of text provide background information and throughout there are drop-down panels with extra facts. Key concepts are explained with hand-drawn colour diagrams and each title is web linked. Titles: Aircraft; Cars, Trucks and Bikes; Energy and Power; Gadgets; Ships and Submarines; Space Exploration.