The Flying Geese unit is wonderful and versatile in the world of quilting. The Book and Ruler by Joan Hawley of Lazy Girl Designs, Flying Geese & More and Flying Geese X 4Ö No Math Ruler, offer a technique for fast-pieceing with no math, no waste and no triangles to cut for this beloved but sometimes trickly block to piece.150 original and favorite block designs . Make perfect Flying Geese, Half Square Triangles and Quarter Square Triangles. Complete instructions included.