Letha's Fan Partial Piecing

I have only sewn part of the way along the first piece seam leaving the
rest unsewn to be sewn at the end to complete the block.

Layout

The oblongs are laid out around a central square so it is necessary to partial piece.

Now add the second oblong to the completed
edge

Add the third blong

And the fourth

Now sew the the unsewn section of the first oblong and
along the fourth piece to complete the block.