Inclined planes are around us every day, though we may not always realize it. Wheelchair ramps, slides, and even stairs are all examples of inclined planes that are integral parts of daily life. Readers will learn all about this simple machine through interesting real-world examples. They'll explore detailed pictures of mechanical parts with extensive annotations and learn about key engineering principles. "Technology in Action" spreads let readers see how mechanical parts and simple machines work. This accessible book is the perfect introduction to simple machines and is sure to encourage an interest in STEM.