Itoya Profolio (or anything similar with clear plastic pocket sheets) are required to present your process work in. They are available at the PSU student store as well as most art supply shops around town. 3-ring binders are not accepted for process work.
What to include:
Research, both visual and text-based
Rough digital layouts
Mock-ups (with corrections written in)
Materials tests (testing various papers with the final printer to be used for best end result)
Library of images used in project (if applicable)
Sketches should be clear enough for another person to understand your aims. Keep them smaller than roughly 3”x5”.