Explores the principles of force and motion, describing how they have been applied from ancient to modern times.---from the publisher
64 pages 978-0789448828 Ages 8-12
Keywords: force and motion, physics, how things work, ancient history, world history, Science Curriculum, science, nonfiction, information, part of a series, 8 year old, 9 year old, 10 year old, 11 year old, 12 year old