This website contains a presentation on WordPress plugins. It’s not a slideshow; it’s a website. But the slides use a slightly larger font than normal so that they can be read when projected onto a screen. Use the navigation links to view each of the “oik_presentation” pages. Don’t forget to scroll down to read all the content on the page. There should also be some narrative at the bottom of each page. There may even be an audio version.
Click on this link to view the presentation on “Top 10 WordPress plugins and how to use them”.