Shown here is the Five and Four Tessellation by Eric Gjerde. A tessellation in origami is in simple terms paper geometry, varying from patterns and three-dimensional images but they are mostly flat. Some tessellations can be held up to a light and show a nice shadow, such as this one above. I will show a tessellation of my own in my next blog post. Tessellations are often fun to fold and require a lot of time and patience, as most origami does. Tessellations normally divide the paper into sections, making a grid.