Cut these on the diagonal and sew the print to the white-on-white, OR, draw a line on the diagonal of one of them and sew 1/4 inch from the line on each side of the line, then cut along the drawn line. Either method will produce four blocks that will be 4 1/2 inches square.
Press the seam toward the print.
Cut ten 2 1/2 inch white-on-white squares
Cut ten 2 1/2 inch squares from a different thirties print than the one used for the triangles.
Make a pile of each color and sew each WOW to a print to make ten rectangles.
Press the seam toward the print.
Sew the rectangles together as shown in the graphic, which will produce five 4-patch squares.
Sew a 4-patch unit to each side of two of your half square triangle units. Press the seams out (toward the 4-patch squares).
Sew a half square triangle unit to each side of the remaining 4-patch unit. Press the seams in (toward the 4-patch square).
Match your seams and sew the units into the finished block, as shown.
Your finished (unfinished) block should measure 12 1/2 inches. Be sure to leave the seam allowance on the block, DO NOT cut it to the twelve inch finished size -- as the “finished” measurement represents the block size after it is sewn into a quilt top.
