How did the ancient Egyptians build the pyramids? How do we build giant skyscrapers today? To understand these marvels, you need to understand simple machines such as levers and inclined planes. Machines and Motion contains 35 lessons that will teach your child about simple machines and the laws of motion, which are the basic principles governing the physical world around us. 35 lessons. Full-color.
This is one of three books in the God's Design for the Physical World Series. The other titles are Inventions & Technology, and Heat & Energy. One teacher's guide covers all three books and includes a CD with worksheets and tests.