The half square triangle unit is probably the most commonly used patch in a quilt block -- well it is second only to the square. It is made simply with two triangles, filling up half the square each -- hence the name. Take a quick look through this website, or in any quilting magazine, and you will start to notice that this half square triangle, regardless of its size, is present in more quilts than not.
Free Quilt Block Pattern
The Ribbon Squares quilt block gives you an "extra bang for your buck", in that it is two blocks in one. The centre of the block is comprised of a Sawtooth Star and that is expanded to include the extras. All in all this makes up this new block called Ribbon Squares.
The resultant quilt block is therefore larger than many blocks, so this is a good choice if you want to create a quilt faster by having to construct fewer blocks. The sewing of this block is simple using only only two pieced patches -- half square triangles for the four corners, and flying geese units as part of the centre of the block.
The two sample quilts illustrated are both designed with the blocks on point but are very different. There is no end to the layouts you can come up with for your own quilt design. Have fun!