00It's just strip pieced squares on point or strip pieced triangles cut with a 90 deg ruler with the 90 deg point on top alternating with bottom. Yardage would depend on the size of the quilt you're making, and the size of the blocks, and the width of the strips. I'd probably offset the strips before cutting, so there wouldn't be as much waste. It looks like 2 sets of colored triangles, with 4.5 triangles of dark on the sides, and 11 light triangles in the middle, from top to bottom it looks like 3 dark triangle, 11 light triangles, then presumably 3 dark triangles. Once you're sure of the counts, it can be calculated.