I can make a rhombus, using a rhombus.

I have been working with students, almost individually, to get their report cards done since term ends on Friday. I was working with a group of boys on their assessments using pattern blocks (rhombus, hexagon, squares, triangles) for addition and subtraction. When the boys finished I let them play around with the shapes for several minutes. This one bright kid commented, "I can make a rhombus using rhombuses." Another little guy overheard this and chimed in, "I can too!" and picked up one rhombus and then set on the table. This had me roaring with laughter and all the occupants of the room turned to look at me. It was darling.