My pattern was based on squares being first in order, triangles second, circles third. Starting with the three squares and all the patterns for the squares but going in order of square, triangle, circle(STC). Next three triangles, and all the patterns for triangles but being mindful to stay with the STC placement, Finally three circles, to finish off the pattern.
Making sure that students use rules and stay organized in finding all of the different patterns with the three shapes.