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.
The author shows how a modular origami box with a square base can be made from four rectangular sheets plus a template. He also discusses some mathematics in the context of the constructed box.