Below are the presentations used in class for the Surface Processes Unit. The PowerPoint Presentations require either Microsoft PowerPoint, PowerPoint Viewer, or OpenOffice. I have provided links to PowerPoint Viewer and OpenOffice. They are both free downloads, but please be aware that OpenOffice will take up a large amount of hard disk space. The Flash presentations require the Adobe Flash plugin for whatever browser you use. It is also a free download. Please remember that before you install anything on your computer, you should get your parents permission.