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 Jersey Basket quilt block is a another easy block because it contains only squares and half square triangles. It is constructed in the method of a four patch, by dividing the sections of the block into quadrants and then sewing those quadrants together. All in all, this is a wonderful block to get you started on your quiltmaking journey.
The two sample quilts illustrated show the quilt blocks rotated here and there to create a secondary pattern, or just to have a flow to the quilts.