"Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out!"Amazon website.

Brief text, sidebars, labeled illustrations, and humorous cartoons describe what it would be like to live without simple machines, explaining how simple machines enable a lot of things around us to work, allowing us to travel in wheeled vehicles, lift heavy objects, put things together, and take things apart.

Learn all about mechanical engineering in this engaging explanation of its basic principles, including an introduction to levers, wedges, and inclined planes.

This book introduces early readers to pulleys and how we use them everyday.

Nothing embodies everyday engineering like simple machines—the basic mechanical devices used for thousands of years that we rely on more than we may realize. Probe the wonders of the inclined plane, screw, wedge, lever, wheel-and-axle, and pulley, and ponder their myriad applications..

"We don't think much about nails and screws, until we need to fix or build something. The screw is a fundamental tool in nearly all construction projects. While it may be small, it is a powerful invention that has changed the world forever. This accessible book introduces readers to this simple machine and its many uses through real-world examples. Detailed pictures with thorough annotations help readers understand key engineering concepts. Fascinating...

"Wheels and axles may seem basic, but with these inventions humankind has created incredible things. From skateboards to Ferris wheels, these simple machines have changed our world forever. This accessible book helps readers relate wheels and axles to the technology in their daily lives through cool real-world examples. Detailed pictures of machinery with extensive annotations help readers understand key engineering concepts. Fun 'Technology in Action'...

"A teeter-totter is more than fun to play on, it's also a lever, one of the six simple machines. This accessible book introduces readers to the lever through real-world examples. They'll learn about simple and more complex inventions using the lever that have changed the world. Detailed pictures with thorough annotations explain important engineering concepts. Cool 'Technology in Action' spreads let readers get a close-up look at levers at work. This...

Theodore Gray applies his trademark mix of engaging stories, real-time experiments, and stunning photography to the inner workings of machines, big and small, revealing the extraordinary science, beauty, and rich history of everyday things. He has become a household name among fans, both young and old, of popular science and mechanics. He's an incorrigible tinkerer with a constant curiosity for how things work. Gray's readers love how he always brings...