This new edition of Six Simple Twists: The Pleat Pattern Approach to Origami Tessellation Design introduces an innovative pleat pattern technique for origami designs that is easily accessible to anyone who enjoys the geometry of paper. The book begins with six basic forms meant to ease the reader into the style, and then systematically scaffolds the instructions to build a strong understanding of the techniques, leading to instructions on a limitless number of patterns. It then describes a process of designing additional building blocks. At the end, what emerges is a fascinating artform that will enrich folders for many years. Unlike standard, project-based origami books, Six Simple Twists focuses on how to design, rather than construct. In this thoroughly updated second edition, the book explores new techniques and example tessellations, with full-page images, and mathematical analysis of the patterns. A reader will, through practice, gain the ability to create still more complex and fascinating designs. Key Features Introduces the reader to origami tessellations and demonstrates their place in the origami community New layout and instructional approach restructure the book from the ground up Addresses common tessellation questions, such as what types of paper are best to use, and how this artform rose in popularity Teaches the reader how to grid a sheet of paper and the importance of the pre-creases Gives the reader the ability to create and understand tessellations through scaffolded instruction Includes exercises to test understanding Introduces a new notation system for precisely describing pleat intersections Analyzes pleat intersections mathematically using geometrically-focused models, including information about Brocard points

With a prologue by Tomoko Fuse, the worldwide renowned Japanese origami master, the book contains 26 of my favourite tessellations, along other designs derived from those models (3 boxes and 2 "omiyage/tato). The book starts with an introduction to the origins and history of tessellations and describes the techniques and materials needed by those who want to begin with this kind of origami. The models are sorted based on the twists used in each one and include suggestions based on my own folding experience. For each model, a CP (crease pattern) is included, along with step by step instructions to fold it. Those instructions contain diagrams and their related text. At the end of each model you can see the picture of the finished model (usually in the extended version). Scattered between the different models, the reader can see the original hand drawn diagrams by Alejandra Zapico, that were the base of the final computer drawn diagrams. At the end of the book, there are several appendices, such as a small english-spanish origami dictionary, the symbol guide for those used in the book and several references related to tessellations.

Twists, Tilings, and Tessellation describes the underlying principles and mathematics of the broad and exciting field of abstract and mathematical origami, most notably the field of origami tessellations. It contains folding instructions, underlying principles, mathematical concepts, and many beautiful photos of the latest work in this fast-expanding field.

Recreate the braids, buns, and twists of your favorite historical, sci-fi, and fantasy heroes and heroines with Badass Braids. Step-by-step, illustrated instructions will show you how to make the hairstyles from Game of Thrones, The Hunger Games, Star Trek, Star Wars, The Legend of Zelda, Vikings, The Lord of the Rings, and more. When she’s not studying for her PhD in social neuroscience, Silvousplaits (a.k.a. Shannon Burns) is creating and posting weekly instructional videos on her YouTube channel of DIY hair art that mimics the hairstyles of valiant men and women in the best historical, sci-fi, and fantasy shows and movies. In Badass Braids, Shannon shows you how to transform your hair, step by step. The book covers braids and styles from a full spectrum of fantasy worlds (and galaxies), from ancient adversaries and viking warriors to romantic renegades and sci-fi heroines. With an introduction to the styling techniques for different kinds of basic braids, interviews with behind-the-scenes stylists and actors, and original styles inspired by fan-favorites, you will learn to recreate the hairstyles of Katniss Everdeen (The Hunger Games: Mockingjay), Anne Boleyn (The Tudors), the Norse king Ragnar Lothbrok (Vikings), Daenerys Targaryen (Game of Thrones), and many more. Badass Braids is the perfect gift for geeky men and women of all ages!

A modern and unified treatment of the mechanics, planning, and control of robots, suitable for a first course in robotics.

Eric Gjerde demonstrates 25 of his favorite tessellations and turns them into projects for newcomers as well as experienced origamists. With step-by-step instructions, illustrated crease patterns, and how-to photos, you'll learn to create these wonderful designs yourself. Eric's first book covers the fundamentals of origami tessellations, provides history, and describes simple beginning techniques with detailed illustrations and photographs. An extensive gallery showcases tessellations folded by the world's leading origami fine artists---inspiring you to experiment, innovate, and eventually create your own unique designs.

Two ex-Secret Service agents must face a dark world of violence, codes, and spies at a secret CIA training camp in this #1 New York Times bestseller about a mystery that could destroy the nation. Near Washington, D.C., there are two clandestine institutions: the world's most unusual laboratory and a secret CIA training camp. Drawn to these sites by a murder, ex-Secret Service agent Sean King encounters a dark world of mathematicians, codes, and spies. His search for answers soon leads him to more shocking violence-and an autistic girl with an extraordinary genius. Now, only by working with his partner, Michelle Maxwell, who is battling her own personal demons, can he catch a killer...and stop a national threat.