This richly illustrated book provides step-by-step instructions for the construction of over 30 different modular origami structures. With one folding pattern you can create several models! That is the fun of modular origami. Combine various identical units to build three-dimensional geometric shapes such as octahedrons and dodecahedrons. Variations allow you to experiment with the designs of the faces, including stripes, pinwheels, and flower blossoms. The diagrams are clear, crisp, and easy to follow, and are accompanied by inspiring color photographs. The skill level of the origami in this book is intermediate, though beginners are encouraged to try, and origami basics are included in the book. For those who want to go beyond the basics, this book also includes an introduction to the mathematics behind origami.