Star on Star
Free Quilt Block Pattern
The Star on Star quilt block is a wonderful and (easy block) to introduce the three-quarter square triangle patch in this nine patch block design. There are three triangles that make up the square in this quilt patch, but the name is a little misleading (at least to me) in that it seems to suggest that these triangles are all actually quarter square triangles, when in fact it is comprised of only two quarter square triangles as well as a half square triangle.
Now all that being said, this really is a simple block to construct, even though it sounds complicated from my description. This block, forming two overlapping pinwheels, would be an ideal teaching tool for a beginner class.