When we lived in Pennsylvania, I learned this quilt block from Barbara C. Lenox. As she made her quilts, she cut her scraps from each project into the sizes needed for this block. She saved the scraps and assembled them into blocks, and then a quilt, at the end of the year. She called this her “Sourdough” quilt.
Sourdough block, taught to me by Barbara C Lenox
I can’t find her online now except, of course, for those creepy websites that want to sell you information on any name you put in (e.g., “get Santa Claus address, phone, arrest record…”).
I’ve made numerous quilts using this design. As with all diagonally split blocks, this one allows for many interesting arrangements of the blocks.
The block is a great way to learn about color and value, since the design shows itself through contrast in value, regardless of color. And sometimes things that worked fine as a dark or light in one context totally fail in another. 
Patch 1 and Patch 2 in the picture above worked fine as a dark and a light when I put them together in a single block. But when I put them together with the other blocks, the turquoise was too bright to play well with the other dark values. It’s common for yellow, red, and orange to have trouble being dark values, but the turquoise was kind of a surprise! I’ll be re-making that block. Another learning experience 😀
I’m teaching my version of this at Studio Stitch on Saturday, January 26.
Zippy Quilts 
I love the term “sourdough quilts!” How descriptive😊
It is a fun idea 🙂
Great block for scraps or other play. Yes, I love diagonally-oriented blocks and chaining blocks. This does both, so BONUS! 🙂 Thanks, Mary. It was good to talk to you Friday.
Thanks for your support for a number of years!
Oh my this is a scrappy beauty! A wonderful new path for me in scrap management!
It is wonderful for scraps. She made her unpieced patches 4.5” (4” finished) but I make mine 8.5/8” so it is less tedious!
Love this block. I’ll see you January 28.
Thanks! See you soon!
One of these days, I hope to make it to one of your classes!
Well, that would be fun! At least we can take some classes together in July at Quiltfest!
Educational AND inspirational. Thanks. Wish I could attend your course
Wish you could be here too!
Pingback: Scraps Happen, Part III | Zippy Quilts
Thanks. I do love the way those lines can lend structure to what might just be a mess otherwise.