there is an easy way to strip piece the block on the left by making 5 x 5 blocks, alternating white and bright squares. you will have 25 squares, and there is some waste in triangles that you can use in something else. make a large template of the block shown and lay over the 5 x 5 square block. Cut leaving points that show when sewn together. i love strip piecing and this would be quicker for me instead of making triangles to sew together one at a time.