Five Patch quilt blocks are usually used when you are working out the measurements for your quilt in units of fives or tens -- and are a favourite of many. The math is simple and fast. These quilt blocks are designed on a grid of 25 -- 5 patches by 5 patches -- hence the name.
Mrs. Keller's Nine Patch
Free Quilt Block Pattern
Mrs. Keller's Nine Patch is an interesting name for this quilt block because, depending on how you look at it -- (and your colour choices for fabric) -- it contains a nine patch block in the centre (although you will really have to search for it), or the construction (as I have shown you here) is to make this quilt block as an "uneven" nine patch block.
This quilt block could be considered as a five patch as well, because it is made on a 5 x 5 grid. All in all, this is an easy block to construct and you have great fun with your colour choices.