For ages 9+. Children will learn all about inventions: their inventors, the way they changed history, and their evolution over centuries, through the activities and anecdotes provided in this interactive series. Travel through the past and into the future to explore the history of human navigation, from the crude maps of early explorers to the satellite-based Global Positioning System of today. This guide to learning about geography, trade routes over land and sea, and navigational tools and people who used them, is supplemented with 15 hands-on projects and educational activities to expand world view and build navigational confidence.