These are articles posted by The Fold editor all (who may or may not be the author; see byline for authorship). The Fold is the online magazine for members of OrigamiUSA. New articles are posted continuously over the two month period of each issue. To contribute to The Fold or for other questions, please see our FAQ.

### Geometric Folding Algorithms: Free Video Lectures

Course information for an MIT graduate course in Geometric Folding Algorithms.

by Evan Zodl
Diagrams for a Fox Head by Evan Zodl

### Origami & Calculus

Tom Hull
Every time you fold paper, your fingers are doing calculus. Read more to learn how smart your fingers are!

### Diagram: Rabbit

by Hsi-Min Tai
Diagrams for a Rabbit by Hsi-Min Tai.

### Diagrams: Jerboa

by Steven Casey
Diagrams for Steven Casey's Jerboa, an unusual rodent.

### Review: "Eric Joisel: The Magician of Origami"

A review of a book which pays tribute to the inspiring and unrivaled legacy of one of origami's greatest masters.

### Diagrams: Baby Penguin

by Noelia Avila
Diagrams for a Baby Penguin by Noelia Avila

### Tessellations: A Brief Theory of Warping Paper

This article gives a nice overview of the types of tessellations there are, and how to create one yourself.

### Diagrams: Giant Anteater

by Quentin Trollip
Diagrams for a Giant Anteater by Quentin Trollip.

### Paper Review #2: Tant

The second installment of a series reviewing types of paper for folding. This article reviews Tant paper which may be the most versatile paper for Origami uses.

Follow the design of this uniaxial box-pleated design from start to finished, fully assigned crease pattern. Then try your hand at folding it.

### Diagrams: Smiley

by Joshua Goutam
Diagrams for a Smiley Face by Joshua Goutam.

### Commercial Origami Case Study

by Joseph Wu
A case study of a commercial origami project.

### Diagrams and Videos: Valentine's Day Models

This article compares the advantages and disadvantages of PDF diagrams and video instructions. It includes PDF and video diagrams for the models "Lovers Ring" by Francis Ow, and "Will you be my Valentine?" by Stacy Mannes.

### Pureland Origami: Clarity Through Simplification

by Andrew Hudson
Pureland Origami is used as the starting point for a discussion about realism and convention vs. simplicity and clarity in diagramming style

### Diagrams: Sailboat

Designed and diagrammed by Nick Robinson
Diagrams for a Sailboat by Nick Robinson