I use this block as part of a scrappy rail fence. In this example I did them in the same layout - but! If you go to the bottom of the page - you can see where one is Very scrappy - and not in any order - very randon
This block will measure 8 1/2 inched by 8 1/2 inches
So for this block you need:
(3) 2 1/2 by 8 1/2 inch pieces
(2) 1 1/2 by 8 1/2 inch pieces
Unless you are doing a random placement - lay them out like above.
and the stitch the rows together.
Because you will be laying them out like a rail fence - it really doesn't matter which way you press.
If you have longer strips you can create strip sets like below, and then just cut them into 8 1/2 inch blocks
A sample Layout:
Here is the more random one
None of the blocks were exactly the same and I mixed up the placement of the strips -
For each block though - you will notice there are (2) 1 1/2 inch white and (3) 2 1/2 inch wide pieced
I created a PDF file as well - you can find it here: