Next speed piece the half squares, by stacking
the Color 1 and Color 3 3-7/8" x 23-1/4" strips, right
sides together and all edges aligned. On the back of the top strip,
lightly mark the 3-7/8" square lines and mark the diagonals in
the direction shown at left. Now sew 1/4" above and
below the marked diagonals, pivoting at the square lines. Now cut
apart ON the marked diagonals, and on the 3-7/8" square lines.
This will give you twelve half squares. Press seam allowances towards
the darker fabric. These should measure 3-1/2" ...