This document provides instructions for designing a paper aircraft in 12 steps. The steps include folding a sheet of paper in half lengthwise to create a center fold guideline, then making a series of folds along the guideline and specified dimensions to form the fuselage, wings and fins. The final steps involve folding down the wings and fins and calibrating the aircraft before its inaugural flight. Following the instructions should enable students to design their own paper aircraft by the end of the lesson.