How often have you had a student who’s missed your class and needs to catch up on course notes? Ever wish there was a simple way to share your presentations online without students having to download PowerPoint viewer? Now there’s a solution! SlideShare is a free service that allows you to upload your PowerPoint or OpenOffice presentations and share them online. You can either refer students to the address of the presentation on the SlideShare site, or you can embed the presentation in your own site. If you really want to get creative, you can record audio of yourself (discussing the slide in greater detail) and upload the .mp3 to go along with the presentation. Then, you can edit the presentation to make sure the slides transition in time with your lecture. Very cool! Imagine having all of your class presentations done? And, yes, you can make your presentations private (invite only). Below is an example of one of my old Biology presentations on cell parts so you can see how it works.