This 34-slide PPT presentation discusses the history of Simple Machines and who invented them. The six simple machines (lever, pulley, wheel & axle, wedge, screw, inclined plane) are introduced in colorful slides. Various simple machines are shown and students will have the opportunity to guess which machine matches the image on the screen. If they tap/click the correct image, it will spin around. An animated assessment is the final activity. I invite you to take a moment to click on the PREVIEW to see a sampling of images which don't show up in the thumbnails.