Welcome to week 3 of the star quilt along.
This week's block is called Ohio Star.
cut 2 squares 5 1/4" from a medium or dark fabric
cut the 2 squares that measure 5 1/4" in half on the diagonal twice to make a total of 8 quarter square triangles
cut 4 squares 4 1/2" from the background fabric
cut the 2 squares that measure 5 1/4" in half on the diagonal twice to make a total of 8 quarter square triangles
and once it is sewn together, square it up to measure 12.5".
Any questions, I'll try to answer them in the comments.
Happy Quilting!