This is a ditto that provides quick notes in outline format for students as they follow along with the teacher in a separate PowerPoint presentation I also created for this lesson. You can preview this presentation, along with 140+ other Powerpoint presentations, that I have created and successfully use in my middle school science class on my teacher resource website (http://www.PickinPost.net). This ditto and presentation covers information on the various types of simple machines and how to calculate work. It follows current science curriculum for both middle and high schools. For a nominal fee you can get this note outline here at TpT. Or you can go to my teacher resource website TeachPower.net and download this handout for free, while also viewing the assortment of 140+ Powerpoint lessons that you can use in conjuction with the outline. Stay tuned to TeachPower.net as I have much more resources planned to help us teachers around the world accomplish our task. If you don't see a presentation lesson [be it science or other subject] that suites your needs then please email me firstname.lastname@example.org and I will be glad to create a custom presentation for any subject for you.