This is the tutorial I promised for the ribbon star block using partial PP. Judy in the mystery train ride has instructions not using PP, I believe she uses squares and rectangles w/ drawn sew lines and cutting the excess off if that method appeals to you more. I prefer PP this shape when I use it, but I am very comfortable w/ PP. I had the strip length numbers but lost the paper I had them written on and honestly can't remember. This is a method of PP that has very little waste and I think makes the triangle pieces less confusing.