Forces and Machines

Through a series of hands-on experiments, readers follow a team of middle-school students as they investigate the effects of pushes, pulls, friction, and gravity on everyday objects. Each chapter presents a practical challenge such as lifting a heavy box or building a simple lever and guides readers through hypothesis testing, data collection, and analysis to reveal how forces interact. The book clearly explains how different simple machines, like pulleys, ramps, and wheel-and-axle systems, can make tasks easier while reinforcing key scientific concepts. By the end, students have a solid understanding of the principles behind forces and the mechanics of basic machines.