Download or read book Simple Machines Make Work Simple | Energy, Force and Motion Grade 3 | Children's Physics Books written by Baby Professor and published by Speedy Publishing LLC. This book was released on 2021-11-01 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: What are simple machines? Use this book to learn about six types of simple machines such as the screw, inclined plane, wedge, pulley, level, wheel and axle. How do these machines operate and how are they used to make life so much easier? Go ahead and grab a copy today.