This article explores several variations in a square twist crease pattern that may be achieved simply by varying the mountain/valley assignment of the same underlying crease pattern.
Two 3D tessellations: a brick wall and an octahedral-tetrahedral truss network.
The origins of origami in Japan are lost in the mists of history, but we have surprisingly good records of paper-folding from over a thousand years ago in pre-Columbian Mesoamerica.
An article about folding images using large grids and hundreds of reverse folds.
Several variations on a hexagon-based, iso-area, geometric collapse method are shown. Some of these were taught at the 2013 OrigamiUSA Annual Convention in New York City.
A pleated cone sliced by multiple planes creates this geometric model reminiscent of a breaking wave.
This article gives a nice overview of the types of tessellations there are, and how to create one yourself.