100 Facts Inventions introduces children aged 7+ to inventions from the time of early man to the modern day. Packed with discoveries, theories and famous inventors, learn why a ride on a boneshaker was very uncomfortable, who made the first model helicopter, and a how melted chocolate bar inspired the inventor of the microwave. Exactly 100 numbered facts will challenge children, acting as an incentive as they make their way through the ebook. Photographs, artwork and diagrams explain things further while activities, quizzes and cartoons make learning fun. 100 Facts is the perfect introduction to this fascinating topic.