Like architecture, hats are head coverings employed to fulfill both practical and expressive requirements, and thus serve both utilitarian and aesthetic ends, including protection against weather conditions, ceremonial or religious reasons, safety, protection, status or as a fashion accessory.

And as in architecture, the design of headwear begins from a plane and is varied into a three-dimensional form as it confronts gravity or meets with the human body.
Students used paper to understand the relationship of two-dimensional planes and three-dimensional modeling by converting planes to forms. Paper is “a material with infinite conformal modeling potential, and its properties differ completely depending on how it is processed,” such as through folding, pleating, or creasing.