Written by Marshall Gunnell
"Making Tri-Folds in PowerPointGood news—there are templates! This is the quickest and easiest way to accomplish your goal, as there are several different tri-fold templates available for download online. Browse through the template library, select the one you like, and download it. Once you’ve downloaded it, go ahead and open it up and you’ll be greeted by two slides."
Note: The above comes directly from their website. Click here to read more.